4.A. History and Development of the Company

Historical Background

Sociedad Química y Minera de Chile S.A. is an open stock corporation organized under the laws of the Republic of Chile. We were constituted by public deed issued on June 17, 1968 by the Notary Public of Santiago, Mr. Sergio Rodríguez Garcés. Our existence was approved by Decree No. 1,164 of June 22, 1968 of the Ministry of Finance, and we were registered on June 29, 1968 in the Registry of Commerce of Santiago, on page 4,537 No. 1,992. Our headquarters is located at El Trovador 4285, Fl. 6, Las Condes, Santiago, Chile. Our telephone number is +56 2 2425-2000. We are legally referred to by our full name Sociedad Química y Minera de Chile S.A. as well as commercially by the abbreviated name “SQM.” Our Website is www.sqm.com. The information contained on or linked from our website is not included as part of, or incorporated by reference into this report. The SEC maintains a website that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC, such as our company, at www.sec.gov.

Commercial exploitation of the caliche ore deposits in northern Chile began in the 1830s, when sodium nitrate was extracted from the ore for use in the manufacturing of explosives and fertilizers. By the end of the nineteenth century, nitrate production had become the leading industry in Chile, and the country was the world’s leading supplier of nitrates. The accelerated commercial development of synthetic nitrates in the 1920s and the global economic depression in the 1930s caused a serious contraction of the Chilean nitrate business, which did not recover significantly until shortly before the Second World War. After the war, the widespread commercial production of synthetic nitrates resulted in a further contraction of the natural nitrate industry in Chile, which continued to operate at depressed levels into the 1960s.

We were formed in 1968 through a joint venture between Compañía Salitrera Anglo Lautaro S.A. (“Anglo Lautaro”) and Corfo, a Chilean government entity. Three years after our formation, in 1971, Anglo Lautaro sold all of its shares to Corfo, and we were wholly owned by the Chilean government until 1983. In 1983, Corfo began a process of privatization by selling our shares to the public and subsequently listing such shares on the Santiago Stock Exchange. By 1988, all of our shares were publicly owned. Our ADSs have traded on the NYSE under the ticker symbol “SQM” since 1993. Each ADS represents one Series B common share. We accessed international capital markets for the issuance of additional ADSs in 1995 and 1999.

Since our inception, we have produced nitrates and iodine, which are obtained from the caliche ore deposits in northern Chile. In 1985, we began to use heap leaching processes to extract nitrates and iodine, and in 1986 we started to produce potassium nitrate at our Coya Sur facility. Between 1994 and 1999, we invested approximately US$300 million in the development of the Salar de Atacama project in northern Chile, which has enabled us to produce potassium chloride, lithium carbonate, lithium hydroxide, potassium sulfate and boric acid.

From 2000 through 2004, we principally consolidated the investments carried out in the preceding five years. We focused on reducing costs and improving efficiencies throughout the organization. In addition, in 2001, we signed a commercial distribution agreement with the Norwegian company Yara International ASA, in order to take advantage of cost synergies in the Specialty Plant Nutrition business line.

Starting in 2005, we began strengthening our leadership position in our core businesses through a combination of capital expenditures and advantageous acquisitions and divestitures. Our acquisitions have included the Kemira Emirates Fertiliser Company (“Kefco”) in Dubai in 2005 and the iodine business of Royal DSM N.V. (“DSM”) in 2006. We also entered into a number of joint ventures, including a joint venture with Migao Corporation (“Migao”), signed in 2008, for the production of potassium nitrate, and SQM VITAS, our joint venture with the French Roullier Group. Pursuant to the latter joint venture, in 2010, we launched a new line of soluble phosphate products, and in 2012 we built new plants for the production of water-soluble fertilizers in Brazil (Candeias), Peru and South Africa (Durban). We also sold: (i) Fertilizantes Olmeca, our former Mexican subsidiary, in 2006, (ii) our stake in Impronta S.R.L., our former Italian subsidiary, in 2007 and (iii) our former butyl lithium plant located in Houston, Texas, in 2008. These sales allowed us to concentrate our efforts on our core products.

Our capital expenditure program has allowed us to add new products to our product lines and increase the production capacity of our existing products. In 2005, we started production of lithium hydroxide at a plant in the Salar del Carmen, near the city of Antofagasta in the north of Chile. In 2007, we completed the construction of a new prilling and granulating plant for nitrates in Coya Sur. In 2011, we completed expansions of our lithium carbonate capacity, achieving 48,000 metric tons of capacity per year. Since 2010, we have continued to expand our production capacity of potassium products in our operations in the Salar de Atacama. In 2011, we completed the construction of a new potassium nitrate facility in Coya Sur, increasing our overall production capacity of potassium nitrate by 300,000 metric tons per year. In 2013, we completed expansions in the production capacity of our iodine plants in Nueva Victoria. Our capital expenditure program also includes exploration for metallic minerals. Our exploration efforts have led to discoveries that in some cases may result in sales of the discovery and the generation of royalty income in the future. Within this context, in 2013 we sold our royalty rights to the Antucoya mining project to Antofagasta Minerals.

In 2014, we invested in the development of new extraction sectors and production increases in both nitrates and iodine at Nueva Victoria, reaching an approximate production capacity (including the Iris facility) of 8,500 metric tons per year of iodine at the facility.

In 2015, we focused on increasing the efficiency of our operations. Within this context, we announced a plan to restructure our iodine and nitrate operations. In an effort to take advantage of our highly efficient production facilities at our Nueva Victoria site, we decided to suspend the mining and nitrate operations and reduce iodine production at our Pedro de Valdivia site. During 2017, we increased our iodine production capacity at Nueva Victoria to approximately 10,000 metric tons per year. We continued expanding in 2018, and today, including Pedro de Valdivia and Nueva Victoria, our current effective iodine capacity is approximately 14,000 metric tons per year.

In 2016, we entered into a 50/50 joint venture with Lithium Americas to develop the Minera Exar lithium project in Caucharí-Olaroz in the Jujuy province of Argentina. Our interest was sold to Ganfeng Lithium Netherlands Co., BV in 2018. Ganfeng is responsible for a US$50 million deferred payment to us if certain sales goals are met by the project. In 2016, we also made a capital contribution of US$20 million to Elemental Minerals Limited (“Elemental Minerals”), an Australian based company whose main assets are various potassium deposits in the Republic of Congo. We invested approximately US$20 million in exchange for 18% of the company, and a right of first refusal for approximately 20% of the total potash production of Elemental Minerals. Following this transaction at the end of 2016, Elemental Minerals changed its name to Kore Potash Limited. The State General Reserve Fund of Oman invested US$20 million.

In 2017, we continued to expand our operations outside Chile and, together with our subsidiary SQM Australia Pty, we entered into an agreement to acquire 50% of the assets of the Mt. Holland lithium project in Western Australia. We entered into a 50/50 unincorporated joint venture with Kidman Resources Limited (“Kidman”), with respect to the Mt. Holland lithium project, to design, construct and operate a mine, concentrator and refinery to produce approximately 45,000 metric tons of lithium hydroxide per year. SQM Australia Pty committed to pay a price of US$110 million for the 50% of the Mt. Holland assets, which was split into an initial payment of US$25 million and a deferred payment of US$87.5 million, both payments subject to certain conditions precedent. SQM Australia Pty paid an additional (i) US$10 million as part of the initial payment, and (ii) US$30 million once the deferred payment took place. All payments subject to conditions under the purchase agreement with Kidman were executed by December 2018. These investments are not included in the capital expenditure program amounts discussed in the section below. These investments were carried out with internal financing.

On September 23, 2019, Wesfarmers Limited (“Wesfarmers”) acquired all the issued ordinary shares in Kidman, becoming a 50% partner in the Mt. Holland lithium project in the joint venture with SQM Australia Pty.

In September 2020, in the Salar de Atacama, we began a self-assessment process, which is the first step in the Initiative for Responsible Mining Assurance’s (“IRMA”) rigorous responsible mining certification process.

In October 2020, we announced our Sustainable Development Plan, which includes voluntarily expanding our monitoring systems, promoting better and more meaningful conversations with neighboring communities, becoming carbon neutral and reducing water by 65% and brine extraction by 50%. As part of this plan, we also set a goal to obtain international certifications and participate in international sustainability indices.

In November 2020, we were accepted into the Dow Jones Sustainability Chile and the Dow Jones Sustainability MILA Pacific Alliance Indices.

On February 16, 2021, our Board approved the investment of approximately US$700 million for our 50% share of the development costs of the Mt. Holland lithium hydroxide project in the joint venture with Wesfarmers.

Capital Expenditure Program

We regularly review different opportunities to improve our production methods, reduce costs, increase production capacity of existing products and develop new products and markets. Additionally, significant capital expenditures are required every year in order to sustain our production capacity. We are focused on developing new products in response to identified customer demand, as well as new products that can be derived as part of our existing production or other products that could fit our long-term development strategy. Our capital expenditures in Chile have been mainly related to the organic growth and sustainability of our business, including the construction of new facilities and the renovation of plants and equipment. In 2020, we also worked on the expansion of our lithium carbonate and lithium hydroxide capacity in Chile, which we believe will reach 120,000 metric tons and 21,500 metric tons respectively by the end of 2021. We also began expansions related to the mining and production facilities of nitrates and iodine in Chile.

Our capital expenditures for the years ended December 31, 2020, 2019 and 2018 were as follows:

During 2020, we had total capital expenditures of US$322.2 million, a decrease compared to the US$450 million that was originally expected as a result in the delay of the purchasing of equipment. Our 2020 capital expenditure is primarily related to:

During 2019, we had total capital expenditures of US$321.3 million, primarily related to:

During 2018, we had total capital expenditures of US$244.7 million, primarily related to:

We believe that our capital expenditures for 2021 could reach approximately US$500 million focused on the maintenance of our production facilities in order to strengthen our ability to meet our production goals and to increase our production capacity, primarily related to lithium carbonate and lithium hydroxide capacity expansions and nitrates and iodine capacity in Chile and development of our lithium project in Australia. We expect our installed capacity of lithium carbonate and lithium hydroxide in Chile to reach approximately 120,000 and 21,500 metric tons respectively by the second half of 2021, an increase of 50,000 metric tons of lithium carbonate and of 8,000 metric tons of lithium hydroxide compared to our current effective capacity. We will also begin the development and purchase of long-lead time equipment in connection with the Mt. Holland lithium project in Western Australia.

4.B. Business Overview

The Company

We believe that we are the world’s largest producer of potassium nitrate and iodine and one of the world´s largest lithium producers. We also produce specialty plant nutrients, iodine derivatives, lithium derivatives, potassium chloride, potassium sulfate and certain industrial chemicals (including industrial nitrates and solar salts). Our products are sold in approximately 110 countries through our worldwide distribution network, with 91% of our sales in 2020 derived from countries outside Chile.

Our products are mainly derived from mineral deposits found in northern Chile. We mine and process caliche ore and brine deposits. The caliche ore in northern Chile contains the only known nitrate and iodine deposits in the world and is the world’s largest commercially exploited source of natural nitrates. The brine deposits of the Salar de Atacama, a salt-encrusted depression in the Atacama Desert in northern Chile, contain high concentrations of lithium and potassium as well as significant concentrations of sulfate and boron.

From our caliche ore deposits, we produce a wide range of nitrate-based products used for specialty plant nutrients and industrial applications, as well as iodine and iodine derivatives. At the Salar de Atacama, we extract brines rich in potassium, lithium, sulfate and boron in order to produce potassium chloride, potassium sulfate, lithium solutions and bischofite (magnesium chloride). We produce lithium carbonate and lithium hydroxide at our plant near the city of Antofagasta, Chile, from the solutions brought from the Salar de Atacama. We market all of these products through an established worldwide distribution network.

Our products are divided into six categories: specialty plant nutrients; iodine and its derivatives; lithium and its derivatives; potassium chloride and potassium sulfate; industrial chemicals and other commodity fertilizers. Specialty plant nutrients are premium fertilizers that enable farmers to improve yields and the quality of certain crops. Our main specialty fertilizer is potassium nitrate, which is used primarily in high-value crops. Iodine and its derivatives are mainly used in the X-ray contrast media and biocides industries and in the production of polarizing film, which is an important component in LCD screens. Lithium and its derivatives are mainly used in batteries, greases and frits for production of ceramics. Potassium chloride is a commodity fertilizer that is produced and sold by us worldwide. Potassium sulfate is a specialty fertilizer used primarily in crops such as vegetables, fruits and industrial crops. Industrial chemicals have a wide range of applications in certain chemical processes such as the manufacturing of glass, explosives and ceramics. Industrial nitrates are also being used in concentrated solar power plants as a means for energy storage. In addition, we complement our product portfolio through the buying and selling of other fertilizers in Chile and around the world.

For the year ended December 31, 2020, we had revenues of US$1,817.2 million, gross profit of US$482.9 million and profit attributable to controlling interests of US$164.5 million. Our worldwide market capitalization as of December 31, 2020 was approximately US$11.0 billion.

Specialty Plant Nutrition: We produce four main types of specialty plant nutrients which offer nutritional solutions for fertigation, direct soil and foliar fertilizer applications: potassium nitrate, sodium nitrate, sodium potassium nitrate and specialty blends. We also sell other specialty fertilizers including third party products. All of these products are used in either solid or liquid form mainly on high value crops such as fruit, flowers and some vegetables. These fertilizers are widely used in crops that use modern agricultural techniques such as hydroponics, greenhouses and crops with foliar application and fertigation (in the latter case, the fertilizer is dissolved in water before irrigation).

Specialty plant nutrients have certain advantages over commodity fertilizers, such as rapid and effective absorption (without requiring nitrification), superior water solubility, increased soil pH (which reduces soil acidity) and low chloride content. One of the most important products in this business line is potassium nitrate, which is sold in crystalline or prill form, allowing for different application methods. Crystalline potassium nitrate products are ideal for application by fertigation and foliar applications, and potassium nitrate prills are suitable for direct soil applications.

We have developed brands for marketing according to the different applications and uses of our products. Our main brands are: Ultrasol^R (fertigation), Qrop^R (soil application), Speedfol^R (foliar application) and Allganic^R (organic agriculture).

The new needs of more sophisticated customers demand that the industry provide integrated solutions rather than individual products. Our products, including customized specialty blends that meet specific needs along with the agronomic service provided, allow us to create plant nutrition solutions that add value to crops through higher yields and better-quality production. Because our products are derived from natural nitrate compounds or natural potassium brines, they have certain advantages over synthetically produced fertilizers. One of the advantages of our products is the presence of certain beneficial trace elements, which makes them more valuable for customers who prefer products of natural origin. As a result, specialty plant nutrients are sold at a premium price compared to commodity fertilizers.

Iodine and its Derivatives: We believe that we are the world’s leading producer of iodine and iodine derivatives, which are used in a wide range of medical, pharmaceutical, agricultural and industrial applications, including x-ray contrast media, polarizing films for LCD and LED, antiseptics, biocides and disinfectants, in the synthesis of pharmaceuticals, electronics, pigments and dye components.

Lithium and its Derivatives: We are a leading producer of lithium carbonate, which is used in a variety of applications, including electrochemical materials for batteries used in electric vehicles, portable computers, tablets, cellular telephones and electronic apparatus, frits for the ceramic and enamel industries, heat-resistant glass (ceramic glass), air conditioning chemicals, continuous casting powder for steel extrusion, pharmaceuticals and lithium derivatives. We are also a leading supplier of lithium hydroxide, which is primarily used as an input for the lubricating greases industry and for cathodes for high energy capacity batteries.

Potassium: We produce potassium chloride and potassium sulfate from brines extracted from the Salar de Atacama. Potassium chloride is a commodity fertilizer used to fertilize a variety of crops including corn, rice, sugar, soybean and wheat. Potassium sulfate is a specialty fertilizer used mainly in crops such as vegetables, fruits and industrial crops.

Industrial Chemicals: We produce and sell three industrial chemicals: sodium nitrate, potassium nitrate and potassium chloride. Sodium nitrate is used primarily in the production of glass, explosives, and metal treatment, metal recycling and the production of insulation materials, among other uses. Potassium nitrate is used in the manufacturing of specialty glass, and it is also an important raw material for the production of frits for the ceramics, enamel industries, metal treatment and pyrotechnics. Solar salts, a combination of potassium nitrate and sodium nitrate, are used as a thermal storage medium in concentrated solar power plants. Potassium chloride is a basic chemical used to produce potassium hydroxide, and it is also used as an additive in oil drilling as well as in food processing, among other uses.

Other Products and Services: We also sell other fertilizers and blends, some of which we do not produce. We are the largest company that produces and distributes the three main potassium sources: potassium nitrate, potassium sulfate and potassium chloride.

The following table shows the percentage breakdown of our revenues for 2020, 2019 and 2018 according to our product lines:

Business Strategy

SQM is a global company that develops and produces diverse products for several industries essential for human progress, such as health, nutrition, renewable energy and technology through innovation and technological development. We aim to maintain our leading world position in the lithium, potassium nitrate, iodine and thermo-solar salts markets by:

We are a dynamic company. In pursuit of our objectives, we expect to acquire and develop projects and interests that are consistent with our existing and new businesses, either alone or with joint venture partners. We may also divest or sell-down interests that we have acquired to deploy funds for other investments or other purposes in pursuit of our objectives or to adjust risk or diversify our asset base.

We are a company built and managed by a culture based on excellence, safety, sustainability and integrity. We work every day to expand this culture through the attraction, retention and development of talent as well encouraging an inclusive and diverse work environment ensuring the unique knowledge and innovation needed to sustain our business. We strive for safe and accident-free operations by promoting conduct that favors the physical safety and psychological well-being of everyone who works directly and indirectly with the Company.

We position ourselves as leaders in sustainability and commit to a sustainable future where we constantly work to responsibly manage natural resources, protect human rights, care for the environment, form close and trusting relationships with our neighboring communities and create value. Within these communities, we support projects and activities with a focus on education, business development, and protection of the environment and historical heritage. We create value for our clients through established commercial models and the production and development of differentiated products that respond to their industry and market specific needs, constantly creating and providing a sustainable improvement in the quality of life. We will continue to create value for all of our stakeholders through responsible management of natural resources, sustainable expansion projects and improvement of our existing operations, with a focus on minimizing our environmental impacts by reducing our carbon, energy and water footprints and working together with our shareholders, employees, customers, suppliers and communities.

Specialty Plant Nutrition

Our strategy in our specialty plant nutrition business is to: (i) leverage the advantages of our specialty products over commodity-type fertilizers; (ii) selectively expand our business by increasing our sales of higher margin specialty plant nutrients based on potassium and natural nitrates, particularly soluble potassium nitrate and specialty blends; (iii) pursue investment opportunities in complementary businesses to enhance our product portfolio, increase production, reduce costs, and add value to the marketing of our products; (iv) develop new specialty nutrient blends produced in our mixing plants that are strategically located in or near our principal markets in order to meet specific customer needs; (v) focus primarily on the markets where we can sell our plant nutrients in soluble and foliar applications in order to establish a leadership position; (vi) further develop our global distribution and marketing system directly and through strategic alliances with other producers and global or local distributors; (vii) reduce our production costs through improved processes and higher labor productivity so as to compete more effectively and (viii) supply a product with consistent quality according to the specific requirements of our customers.

Iodine and its Derivatives

Our strategy in our iodine business is to: (i) reach and maintain a sufficient market share of the iodine market in order to optimize the use of our available production capacity; (ii) encourage demand growth and promote new iodine uses; (iii) participate in iodine recycling projects through the Ajay-SQM Group (“ASG”); (iv) reduce our production costs through improved processes and higher productivity in order to compete more effectively and (v) supply a product with consistent quality according to the requirements of our customers.

Lithium and its Derivatives

Our strategy in our lithium business is to: (i) strategically allocate our sales of lithium carbonate and lithium hydroxide; (ii) encourage demand growth and promote new lithium uses; (iii) selectively pursue opportunities in the lithium derivatives business by creating new lithium compounds; (iv) reduce our production costs through improved processes and higher productivity in order to compete more effectively; (v) supply a product with consistent quality according to the requirements of our customers; (vi) diversify our operations geographically and jurisdictionally; and (vii) diversifying our asset base or adjusting risk by acquiring new projects and interests (either alone or with joint venture partners), divesting existing projects or selling down our interests in projects.

Potassium

Our strategy in our potassium business is to: (i) offer a portfolio of potassium products, including potassium sulfate, potassium chloride and other fertilizers, to our traditional markets; (ii) have flexibility to offer crystalized (standard) or granular (compacted) form products according to market requirements; (iii) focus on markets where we have logistical advantages and synergies with our specialty plant nutrition business and (iv) supply a product with consistent quality according to the specific requirements of our customers.

Industrial Chemicals

Our strategy in our industrial chemical business is to: (i) maintain our leadership position in the industrial nitrates market; (ii) encourage demand growth in different applications as well as exploring new potential applications; (iii) position ourselves as a long-term, reliable supplier for the thermal storage industry, maintaining close relationships with R&D programs and industrial initiatives; (iv) reduce our production costs through improved processes and higher productivity in order to compete more effectively and (v) supply a product with consistent quality according to the requirements of our customers.

New Business Ventures

We constantly evaluate opportunities that are consistent with our existing and new businesses. We seek to acquire interests in projects both inside and outside of Chile where we believe we have sustainable competitive advantages, and we hope to continue doing so in the future.

In addition, we are actively conducting exploration for metallic minerals in the mining properties we own. If such minerals are found, we may decide to exploit, sell or enter into an association to extract these resources. Our exploration efforts are currently focused on the layer of bedrock that lies beneath the caliche ore that we use as the primary raw material in the production of iodine and nitrates. This bedrock has significant potential for metallic mineralization, particularly copper and gold. A significant portion of our mining properties are located in the Antofagasta region of Chile, where many large copper producers operate.

We have an in-house geological exploration team that explores the area directly, identifying drilling targets and assessing new prospects. In 2020, the team identified six new targets and confirmed mineralization in several of the targets. The number of perforated meters reached 33,523 meters and used four machines owned by us. We also have a metal business development team that works to engage partners interested in investing in metal exploration within our mining properties. As of December 31, 2020, we had five option agreements in place with four mining companies and private equity firms. We participated in the formation of two joint ventures as a result of exercising an option agreement with a junior mining company.

Main Business Lines

Specialty Plant Nutrition

In 2020, specialty plant nutrients revenues decreased to US$701.7 million, representing 38.6% of our total revenues for that year. We believe that we are the world’s largest producer of potassium nitrate. We estimate that our 2020 sales volume represented approximately 51% of the total global potassium nitrate used for all applications, remaining flat with our sales volume in 2019. We estimate that our sales accounted for approximately 48% of global potassium nitrate sales for all agricultural uses by volume in 2020. During 2020, the agricultural potassium nitrate market increased approximately 5% when compared to 2019. These estimates do not include potassium nitrate produced and sold locally in China, only Chinese net imports and exports.

In addition to potassium nitrate, we produce the following specialty plant nutrients: sodium nitrate, sodium potassium nitrate and specialty blends (containing various combinations of nitrogen, phosphate and potassium and generally known as “NPK blends”).

Our specialty plant nutrients have specific characteristics that increase productivity and enhance quality when used on certain crops and soils. The products have significant advantages for certain applications over commodity fertilizers based on other sources of nitrogen and potassium, such as urea and potassium chloride.

The advantages of our specialty plant nutrients include that they:

Specialty Plant Nutrition: Market

The target market for our specialty plant nutrients includes producers of high-value crops such as vegetables, fruits, industrial crops, flowers, cotton and others. Furthermore, we sell specialty plant nutrients to producers of chloride-sensitive crops. Since 1990, the international market for specialty plant nutrients has grown at a faster rate than the international market for commodity-type fertilizers. This is mostly due to: (i) the application of new agricultural technologies such as fertigation and hydroponics, and the use of greenhouses; (ii) the increase in the cost of land and the scarcity of water, which has forced farmers to improve their yields and reduce water use; and (iii) the increase in demand for higher quality crops.

Over the last ten years, the compound annual growth rate for vegetable production per capita was 3%, while the compound annual growth rate for the world population was closer to 1%.

Worldwide scarcity of water and arable land drives the development of new agricultural techniques to maximize the use of these resources. A good example of this is the more efficient use of water through irrigation, which has grown at an average annual rate of 1% during the last 20 years (a pace similar to population growth). Micro-irrigation, which results in even more efficient use of water, has grown at 10% per year over the same period. Micro-irrigation systems, which include drip irrigation and micro-sprinklers, are the most efficient forms of technical irrigation. These applications require fully water-soluble plant nutrients. Our nitrate-based specialty plant nutrients are fully soluble in water and provide nitrogen in nitric form, which helps crops absorb these nutrients faster than they absorb urea- or ammonium-based fertilizers, facilitating a more efficient application of nutrients to the plant and thereby increasing the crop’s yield and improving its quality.

The lowest global share of hectares under micro-irrigation over total irrigated hectares is in Asia, with a figure of approximately 3%. This represents a high potential for the introduction of micro-irrigation in that region, which is reflected in the high growth rates in Asia in recent years.

Potassium nitrate is an important market in China, although currently its demand is largely fulfilled by domestic producers. Total demand of potassium nitrate in Asian countries totals approximately 400,000 to 420,000 metric tons, of which approximately 130,000 metric tons is needed for the tobacco industry and approximately 120,000 metric tons is related to the horticulture business. Of the total, between 15,000 and 35,000 metric tons of potassium nitrate are imports.

Specialty Plant Nutrition: Our Products

Potassium nitrate, sodium potassium nitrate, and specialty blends are higher margin products that use sodium nitrate as a feedstock. These products can be manufactured in crystallized or prilled form. Specialty blends are produced using our own specialty plant nutrients and other components at blending plants operated by us or our affiliates and related companies in Brazil, Chile, China, Italy, Mexico, the Netherlands, Peru, South Africa, Spain, and the United States.

The following table shows our sales volumes of and revenues from specialty plant nutrients for 2020, 2019 and 2018:

In 2020, our specialty plant nutrients revenues decreased to US$701.7 million, representing 39% of our total revenues for that year and a 3.1% decrease from US$723.9 million in specialty plant nutrients revenues in 2019. Prices decreased approximately 2.6% in 2020.

Depending on the systems used to apply specialty nutrients, fertilizers can be classified as specialty field fertilizers or water-soluble fertilizers.

Specialty field fertilizers are applied directly to the soil, manually or in a mechanized fashion. Their high solubility levels, lack of chloride and absence of acidic reactions make them particularly advantageous for tobacco, potatoes, coffee, cotton, and certain fruits and vegetables.

Water-soluble fertilizers are specialty nutrients that are delivered to the crops using modern irrigation systems. As these systems feature refined technology, the products used in them must be highly soluble, rich in nutrients, free of impurities and insoluble substances, and with a low salinity index. The leading nutrient in this segment is potassium nitrate, whose optimal balance of nitric nitrogen and chloride-free potassium (the two macronutrients most needed by plants) make it an indispensable source of nutrition for crops that use modern irrigation systems.

Potassium nitrate is widely known to be a vital component in foliar feeding applications, where usage is recommended in order to stave off nutritional deficiencies before the first symptoms appear, correct any deficiencies that arise and prevent physiological stress. This nutrient also helps promote a suitable balance between fruit production and/or growth, and plant development, particularly in crops with physiological disorders.

Foliar feeding with potassium nitrate can have beneficial effects:

SQM has consolidated a product portfolio of over 200 specialty fertilizer blends, including the development of brands such as Ultrasol^®, for fertigation; Qrop^®, for application to the soil; Speedfol^®, for foliar feeding and Allganic^® for organic crops. In recent years, we have added several products to our portfolio such as Qrop^TMKS in 2015 and Ultrasolution K® in 2018.

We have restructured the Qrop products portfolio to include a chloride-free line for direct application to the soil with a variety of specialized formulas and unique mixtures, which make these products highly accurate and quickly available for the plant. Ultrasolution K® addresses the need for potassium-free chloride and a nitrate safe for handling in the liquid fertilizer market, opening new opportunities for SQM in in the cultivation of almonds and strawberries, in which water quality and efficiency are very important.

Other products developed by our research and development team during 2020 include Ultrasoline®, Ultrasol K Acid®, ProP® and Prohydric®. Ultrasoline® is a new product that, together with potassium nitrate, incorporates iodine, an essential element for plants, allowing better root growth, optimal photosynthesis and better tolerance to oxidative stress, among other advantages.

Specialty Plant Nutrition: Marketing and Customers

In 2020, we sold our specialty plant nutrients in approximately 102 countries and to more than 1,100 customers. No customer represented more than 10% of our specialty plant nutrition revenues during 2020, and our ten largest customers accounted in the aggregate for approximately 33% of revenues during that period. No supplier accounted for more than 10% of the costs of sales for this business line.

The table below shows the geographical breakdown of our revenues:

We sell our specialty plant nutrition products globally mainly through our own worldwide network of commercial offices and distributors.

We maintain inventory of our specialty plant nutrients in our commercial offices in our main markets in order to facilitate prompt deliveries to customers. Sales are made pursuant to spot purchase orders or short-term contracts.

As part of our marketing strategy, we provide technical and agronomical assistance to our clients. We have specific knowledge resulting from extensive research and numerous studies conducted by our agronomical teams in close contact with producers throughout the world. The solid agronomical knowledge is key for the development of specific formulas and hydroponic and fertigation nutritional plans, which allows us to provide expert advice for producing crops that meet high quality standards for the most efficient markets and in the most environmentally challenging conditions.

By working closely with our customers, we are able to identify their needs for new products and a possible existence of higher-value-added markets. Our specialty plant nutrients are used on a wide variety of crops, particularly value-added crops, where the use of our products enables our customers to increase yields and achieve a premium price for their products.

Our customers are located in diverse latitudes. Consequently, we do not believe there are any seasonal or cyclical factors that can materially affect the sales of our specialty plant nutrients.

Specialty Plant Nutrition: Fertilizer Sales in Chile

We market specialty plant nutrients in Chile through our subsidiary Soquimich Comercial S.A. (“SQMC”).

SQMC is one of the main players in the Chilean market, offering a wide range of products developed specifically for the crops grown in the country which require specialty plant nutrients.

SQMC sells local products as well as products imported from different countries around the world.

All contracts and agreements between SQMC and its foreign suppliers of fertilizers contain standard and customary commercial terms and conditions. SQMC has been able to obtain adequate supplies of these products with good pricing conditions.

SQMC’s total sales reached US$118 million and US$128 million in 2020 and 2019, respectively. During 2020, no client represented more than 10% of the sales of the Company. According to the customs information related to fertilizers, the market participation of fertilizers imported directly by SQMC during 2020 was approximately 22%.

Specialty Plant Nutrition: Competition

The principal means of competition in the sale of potassium nitrate are product quality, customer service, location, logistics, agronomic expertise and price.

We believe that we are the world’s largest producer of sodium nitrate and potassium nitrate for agricultural use. Our sodium nitrate products compete indirectly with specialty and commodity substitutes, which may be used by some customers instead of sodium nitrate depending on the type of soil and crop to which the product will be applied. Such substitute products include calcium nitrate, ammonium nitrate and calcium ammonium nitrate.

In the potassium nitrate market, our largest competitor is Haifa Chemicals Ltd. (“Haifa”), in Israel, which is a subsidiary of Trans Resources International Inc. We estimate that sales of potassium nitrate by Haifa accounted for approximately 18% of total world sales during 2020 (excluding sales by Chinese producers to the domestic Chinese market). Our sales accounted for approximately 48% of global potassium nitrate sales by volume for the period.

ACF, another Chilean proucer, mainly oriented to iodine production, has produced potassium nitrate from caliche ore and potassium chloride since 2005. Kemapco, a Jordanian producer owned by Arab Potash, produces potassium nitrate in a plant located close to the Port of Aqaba, Jordan. In addition, there are several potassium nitrate producers in China, the largest of which are Yuantong and Migao. Most of the Chinese production is consumed by the Chinese domestic market.

In Chile, our products mainly compete with imported fertilizer blends that use calcium ammonium nitrate or potassium magnesium sulfate. Our specialty plant nutrients also compete indirectly with lower-priced synthetic commodity-type fertilizers such as ammonia and urea, which are produced by many producers in a highly price-competitive market. Our products compete on the basis of advantages that make them more suitable for certain applications as described above.

Iodine and its Derivatives

We believe that we are the world’s largest producer of iodine. In 2020, our revenues from iodine and iodine derivatives amounted to US$334.7 million, representing 18.4% of our total revenues in that year. We estimate that our sales accounted for approximately 28% of global iodine sales by volume in 2020.

Iodine: Market

Iodine and iodine derivatives are used in a wide range of medical, agricultural and industrial applications as well as in human and animal nutrition products. Iodine and iodine derivatives are used as raw materials or catalysts in the formulation of products such as X-ray contrast media, biocides, antiseptics and disinfectants, pharmaceutical intermediates, polarizing films for LCD and LED screens, chemicals, organic compounds and pigments. Iodine is also added in the form of potassium iodate or potassium iodide to edible salt to prevent iodine deficiency disorders.

X-ray contrast media is the leading application of iodine, accounting for approximately 23% of demand. Iodine’s high atomic number and density make it ideally suited for this application, as its presence in the body can help to increase contrast between tissues, organs, and blood vessels with similar X-ray densities. Other applications include pharmaceuticals, which we believe account for 13% of demand; LCD and LED screens, 12%; iodophors and povidone-iodine, 9%; animal nutrition, 8%; fluoride derivatives, 7%; biocides, 6%; nylon, 4%; human nutrition, 4% and other applications, 14%.

During 2020, iodine demand was impacted significantly due to the economic crisis caused by Covid-19, with total global demand decreasing by approximately 9% to 33,200 metric tons. Although the decrease in demand occurred across product lines, two uses of iodine had growth compared to 2019: the use of povidone-iodine grew by 6%, and the use of iodine for human nutrition grew by 1%. It is expected that the majority of iodine applications will begin to recover demand during the course of 2021.

Iodine: Our Products

We produce iodine in our Nueva Victoria plant, near Iquique, and our Pedro de Valdivia plant, close to María Elena. We have a total effective production capacity of approximately 14,800 metric tons per year of iodine, including the Iris plant, which is located close to the Nueva Victoria plant.

Through ASG, we produce organic and inorganic iodine derivatives. ASG was established in the mid-1990s and has production plants in the United States, Chile and France. ASG is one of the world’s leading inorganic and organic iodine derivatives producer.

Consistent with our business strategy, we are constantly working on the development of new applications for our iodine-based products, pursuing a continuing expansion of our businesses and maintaining our market leadership.

We manufacture our iodine and iodine derivatives in accordance with international quality standards and have qualified our iodine facilities and production processes under the ISO 9001:2015 program, providing third party certification of the quality management system and international quality control standards that we have implemented.

The following table shows our total sales volumes and revenues from iodine and iodine derivatives for 2020, 2019 and 2018:

Our revenues decreased to US$334.7 million in 2020 from US$371.0 million in 2019. This decrease was primarily attributable to lower sales volumes during 2020. Average iodine prices were more than 18.9% higher in 2020 than in 2019. Our sales volumes decreased 24.1% in 2020.

Iodine: Marketing and Customers

In 2020, we sold our iodine products in approximately 47 countries to approximately 250 customers, and most of our sales were exports. Two customers each accounted for more than 10% of our iodine revenues in 2020. These two customers accounted for approximately 42% of revenues, and our ten largest customers accounted in the aggregate for approximately 77% of revenues. No supplier accounted for more than 10% of the cost of sales of this business line.

The following table shows the geographical breakdown of our revenues:

We sell iodine through our own worldwide network of representative offices and through our sales, support and distribution affiliates. We maintain inventories of iodine at our facilities throughout the world to facilitate prompt delivery to customers. Iodine sales are made pursuant to spot purchase orders or within the framework of supply agreements. Supply agreements generally specify annual minimum and maximum purchase commitments, and prices are adjusted periodically, according to prevailing market prices.

Iodine: Competition

The world’s main iodine producers are based in Chile, Japan and the United States. Iodine is also produced in Russia, Turkmenistan, Azerbaijan, Indonesia and China.

Iodine is produced in Chile using a unique mineral known as caliche ore, whereas in Japan, the United States, Russia, Turkmenistan, Azerbaijan, and Indonesia, producers extract iodine from underground brines that are mainly obtained together with the extraction of natural gas and petroleum. In China, iodine is extracted from seaweed.

Five Chilean companies accounted for approximately 55% of total global sales of iodine in 2020, including SQM, with approximately 28%, and four other producers accounting for the remaining 27%. The other Chilean producers are Atacama Chemical S.A. (Cosayach), controlled by the Chilean holding company Inverraz S.A.; ACF Minera S.A., owned by the Chilean Urruticoechea family; Algorta Norte S.A., a joint venture between ACF Minera S.A. and Toyota Tsusho; and Atacama Minerals, which is owned by Chinese company Tewoo.

We estimate that eight Japanese iodine producers accounted for approximately 28% of global iodine sales in 2020, including recycled iodine.

We estimate that iodine producers in the United States (one of which is owned by Toyota Tsusho and another by Ise Chemicals Ltd., both of which are Japanese companies) accounted for nearly 5% of world iodine sales in 2020.

Iodine recycling is a growing trend worldwide. Several producers have recycling facilities where they recover iodine and iodine derivatives from iodine waste streams.

We estimate the 19% of the iodine supply comes from iodine recycling. Through ASG or alone, we are also actively participating in the iodine recycling business using iodinated side-streams from a variety of chemical processes in Europe and the United States.

The prices of iodine and iodine derivative products are determined by market conditions. World iodine prices vary depending upon, among other things, the relationship between supply and demand at any given time. Iodine supply varies primarily as a result of the production levels of the iodine producers (including us) and their respective business strategies. Our annual average iodine sales prices increased to approximately US$35 per kilogram in 2020, from the average sales prices of approximately US$29 per kilogram observed in 2019.

Demand for iodine varies depending upon overall levels of economic activity and the level of demand in the medical, pharmaceutical, industrial and other sectors that are the main users of iodine and iodine-derivative products. Certain substitutes for iodine are available for certain applications, such as antiseptics and disinfectants, which could represent a cost-effective alternative to iodine depending on prevailing prices.

The main factors of competition in the sale of iodine and iodine derivative products are reliability, price, quality, customer service and the price and availability of substitutes. We believe we have competitive advantages compared to other producers due to the size and quality of our mining reserves and the available production capacity. We believe our iodine is competitive with that produced by other manufacturers in certain advanced industrial processes. We also believe we benefit competitively from the long-term relationships we have established with our largest customers.

Lithium and its Derivatives

In 2020, our revenues from lithium sales amounted to US$383.4 million, representing 21.1% of our total revenues. We believe we are one of the world’s largest producers of lithium carbonate and lithium hydroxide, and we estimate that our sales volumes accounted for approximately 19% of the global lithium chemicals sales volumes.

Lithium: Market

The lithium market can be divided into (i) lithium minerals for direct use (in which market SQM does not participate directly), (ii) basic lithium chemicals, which include lithium carbonate and lithium hydroxide (as well as lithium chloride, from which lithium carbonate may be made), and (iii) inorganic and organic lithium derivatives, which include numerous compounds produced from basic lithium chemicals (in which market SQM does not participate directly).

Lithium carbonate and lithium hydroxide are principally used to produce the cathodes for rechargeable batteries, taking advantage of lithium’s extreme electrochemical potential and low density. Batteries are the leading application for lithium, accounting for approximately 75% of total lithium demand, including batteries for electric vehicles, which accounted for approximately 54% of total lithium demand.

There are many other applications both for basic lithium chemicals and lithium derivatives, such as lubricating greases (approximately 5% of total lithium demand), heat-resistant glass (ceramic glass) (approximately 5% of total lithium demand), chips for the ceramics and glaze industry (approximately 2% of total lithium demand), chemicals for air conditioning (approximately 1% of total lithium demand), and many others, including pharmaceutical synthesis and metal alloys.

Lithium’s main properties, which facilitate its use in this range of applications, are that it:

During 2020, lithium chemicals demand increased by approximately 6%, reaching approximately 330,000 metric tons. We expect applications related to energy storage to continue driving demand in the coming years.

Lithium: Our Products

We produce lithium carbonate at our Salar del Carmen facilities, near Antofagasta, Chile, from highly concentrated lithium chloride produced in the Salar de Atacama. The annual production capacity of our lithium carbonate plant at the Salar del Carmen is now 70,000 metric tons per year. We are in the process of increasing our production capacity to 180,000 metric tons per year. We believe that the technologies we use, together with the high concentrations of lithium and the characteristics of the Salar de Atacama, such as high evaporation rate and concentration of other minerals, allow us to be one of the lowest cost producers worldwide.

We also produce lithium hydroxide at the same plant at the Salar del Carmen, next to the lithium carbonate operation. The lithium hydroxide facility has a production capacity of 13,500 metric tons per year and we are in the process of increasing this production capacity to 30,000 metric tons per year. In addition, in February 2021 our Board approved the investment for our 50% share of the development costs in the Mt. Holland lithium project in our joint venture with Wesfarmers, which we expect will have a total production capacity of 50,000 metric tons.

The following table shows our total sales volumes and revenues from lithium carbonate and its derivatives for 2020, 2019 and 2018:

Our revenues in 2020 were US$383.4 million, a 24.2% decrease from US$505.7 million in 2019, due to lower prices during the year. The average price for 2020 was approximately 47.1% lower than the average price in 2019.

Lithium: Marketing and Customers

In 2020, we sold our lithium products in approximately 42 countries to approximately 187 customers, and most of our sales were to customers outside of Chile. One customer accounted for more than 10% of our lithium revenues in 2020, accounting for approximately 12% of our lithium revenues. Our ten largest customers accounted in the aggregate for approximately 58% of revenues. No supplier accounted for more than 10% of the cost of sales of this business line. We make lease payments to Corfo which are associated with the sale of different products produced in the Salar de Atacama, including lithium carbonate, lithium hydroxide and potassium chloride. See Note 24.2 to our consolidated financial statements for the disclosure of lease payments made to Corfo for all periods presented.

The following table shows the geographical breakdown of our revenues:

We sell lithium carbonate and lithium hydroxide through our own worldwide network of representative offices and through our sales, support and distribution affiliates. We maintain inventories of these products at our facilities throughout the world to facilitate prompt delivery to customers. Sales of lithium carbonate and lithium hydroxide are made pursuant to spot purchase orders or within the framework of supply agreements. Supply agreements generally specify annual minimum and maximum purchase commitments, and prices are adjusted periodically, according to prevailing market prices. In December 2020, we signed a nine-year sales contract with LG Energy Solution for up to 55,000 metric tons of lithium carbonate equivalent.

Lithium: Competition

Lithium is produced mainly from two sources: (i) concentrated brines and (ii) minerals. During 2020, the main lithium brines producers were Chile, Argentina and China, while the main lithium mineral producers were Australia and China. With total sales of approximately 64,600 metric tons of lithium carbonate and hydroxide, SQM’s market share of lithium chemicals was approximately 19% in 2020. One of our main competitors is Albemarle Corporation (“Albemarle”), which produces lithium carbonate and lithium chloride in Chile and the United States, along with lithium derivatives in the United States, Germany, Taiwan and China, with a market share of approximately 22%. Albemarle also owns 49% of Talison Lithium Pty Ltd. (“Talison”), an Australian company, that is the largest producer of concentrated lithium minerals in the world, based in Western Australia. The remaining 51% of Talison is owned by Tianqi Lithium Corp. (“Tianqi”), a Chinese company producing basic lithium chemicals in China from concentrated lithium minerals. Talison sells a part of its concentrated lithium mineral production to the direct use market, but most of its production, representing approximately 21% of total lithium chemical demand, is converted into basic lithium chemicals in China by Tianqi and Albemarle. Currently, Tianqi is planning to begin production at its lithium hydroxide plant in Australia, which is expected to be operational during 2021. Tianqi is also a significant shareholder of ours, holding approximately 25.86% of our shares. Albemarle plans to begin production at its lithium hydroxide plant in Australia in late 2021.

Another important competitor is Livent Corporation (“Livent”), with an estimated market share of approximately 6%. Livent has production facilities in Argentina through Minera del Altiplano S.A., where it produces lithium chloride and lithium carbonate. In addition, Livent produces lithium derivatives in the United States, the United Kingdom and China. Orocobre Ltd., based in Argentina, produces lithium carbonate, with a market share of approximately 3%.

Australia is an important source of concentrated lithium minerals. Since 2018, two producers have doubled their production of concentrated mineral, which is then converted into lithium chemicals in China. One of these producers is a joint venture between Ganfeng Lithium Co. (“Ganfeng”) and Mineral Resources Ltd in the Mt. Marion project. Galaxy Resources Ltd. is another important producer with operations in Mt. Cattlin. Additionally, Pilbara Minerals (which recently acquired Altura Mining), both produce from the Pilgangoora deposit. In addition, there were at least ten other companies producing lithium in China from brines or minerals in 2020.    

We believe that lithium production will continue to increase in the near future, in response to an increase in demand growth. A number of new projects to develop lithium deposits has been announced recently. Some of these projects are already in the advanced stages of development and others could materialize in the medium term.

Potassium

In 2020, our potassium chloride and potassium sulfate revenues amounted to US$209.3 million, representing 11.5% of our total revenues and a 1.3% decrease compared to 2019, as a result of decreased average prices. We estimate that we accounted for approximately 1% of global sales of potassium chloride in 2020.

We produce potassium chloride by extracting brines from the Salar de Atacama that are rich in potassium chloride and other salts.

Potassium is one of the three macronutrients that a plant needs to develop. Although potassium does not form part of a plant’s structure, it is essential to the development of its basic functions. Potassium chloride is the most commonly used potassium-based fertilizer. It is used to fertilize crops that can tolerate relatively high levels of chloride, and to fertilize crops that are grown under conditions with sufficient rainfall or irrigation practices that prevent chloride from accumulating to excess levels in the rooting systems of the plant.

Some benefits that may be obtained through the use of potassium are:

Potassium chloride is also an important component for our specialty plant nutrition product line, where it is used as a raw material to produce potassium nitrate.

Since 2009, our effective end product capacity has increased to over 2 million metric tons per year, granting us improved flexibility and market coverage.

Potassium: Market

During the last decade, growth in demand for potassium chloride, and for fertilizers in general, has been driven by several key factors, such as a growing world population, higher demand for protein-based diets and less arable land. All of these factors contribute to fertilizer demand growth as a result of efforts to maximize crop yields and use resources more efficiently. For the last ten years, the compound annual growth for the global potassium chloride market was approximately 1 to 2%. We estimate that demand increased 3 million metric tons in 2020, reaching approximately 67 million metric tons.

According to studies prepared by the International Fertilizer Industry Association, cereals account for approximately 45% of world potassium consumption, including corn (14%), rice (13%) and wheat (3%). Oilseeds, predominantly soybeans and palm oil, represent approximately 16% of total potassium demand. Fruits and vegetables account for approximately 22% of world potassium demand, and sugar crops account for close to 7%.

Potassium: Our Products

Potassium chloride differs from our specialty plant nutrition products because it is a commodity fertilizer and contains chloride. We offer potassium chloride in two grades: standard and compacted. Potassium sulfate is considered a specialty fertilizer and we offer this product in soluble grades.

The following table shows our sales volumes of and revenues from potassium chloride and potassium sulfate for 2020, 2019 and 2018:

Our revenues in 2020 were US$209.3 million, a 1.3% decrease from US$212.2 million in 2019, due to significantly lower prices during the year. Our sales volumes in 2020 were approximately 21.7% higher than sales volumes reported last year.

Potassium: Marketing and Customers

In 2020, we sold potassium chloride and potassium sulfate to approximately 509 customers in approximately 41 countries. No individual customer accounted for more than 10% of our revenues of potassium chloride and potassium sulfate in 2020. We estimate that our ten largest customers accounted in the aggregate for approximately 38% of such revenues. One supplier accounted for more than 10% of the cost of sales of this business line, accounting for approximately 11% of the cost of sales for the business line. We make lease payments to Corfo which are associated with the sale of different products produced in the Salar de Atacama, including lithium carbonate, lithium hydroxide and potassium chloride. See Note 24.2 to our consolidated financial statements for the disclosure of lease payments made to Corfo for all periods presented.

The following table shows the geographical breakdown of our revenues:

Potassium: Competition

We estimate that we accounted for approximately 1% of global sales of potassium chloride in 2020. Our main competitors are Nutrien, Uralkali, Belaruskali and Mosaic. We estimate that in 2020, Belaruskali accounted for approximately 18% of global sales, Nutrien accounted for approximately 19% of global sales, Uralkali accounted for approximately 16% of global sales, and Mosaic accounted for approximately 14% of global sales. 

Industrial Chemicals

In 2020, our revenues from industrial chemicals were US$160.6 million, representing approximately 8.8% of our total revenues for that year.

In addition to producing sodium and potassium nitrate for agricultural applications, we produce different grades of these products, including prilled grades, for industrial applications. The grades differ mainly in their chemical purity. We enjoy certain operational flexibility producing industrial nitrates, because they are produced from the same process as their equivalent agricultural grades, needing only an additional step of purification. We may, with certain constraints, shift production from one grade to the other depending on market conditions. This flexibility allows us to maximize yields and to reduce commercial risk.

In addition to producing industrial nitrates, we produce, market and sell industrial-grade potassium chloride.

Industrial Chemicals: Market

Industrial sodium and potassium nitrates are used in a wide range of industrial applications, including the production of glass, ceramics and explosives, metal recycling, insulation materials, metal treatments, thermal solar and various chemical processes.

In addition, this product line has also experienced growth from the use of industrial nitrates as thermal storage in concentrated solar power plants (commonly known as “CSP”). Solar salts for this specific application contain a blend of 60% sodium nitrate and 40% potassium nitrate by weight ratio and are used as a storage and heat transfer medium. Unlike traditional photovoltaic plants, these new plants use a “thermal battery” that contains molten sodium nitrate and potassium nitrate, which store the heat collected during the day. The salts are heated up during the day, while the plants are operating under direct sunlight, and at night they release the solar energy that they have captured, allowing the plants to operate even during hours of darkness. Depending on the power plant technology, solar salts are also used as a heat transfer fluid in the plant system and thereby make CSP plants even more efficient, increasing their output and reducing the Levelized Cost of Electricity (LCOE).

We see a growing trend for the CSP application as a result of its economical long duration electricity storage. The thermal storage of CSP plants helps to improve the stabilization of the electricity grid. Like all large power generation plants, such large CSP power plants are capital intensive and require a relatively long development period.

We supply solar salts to CSP projects around the world. In 2020, we sold approximately 160,000 metric tons of solar salts to supply a CSP project in the Middle East. We expect to supply over 400,000 metric tons to this project between 2020-2022. In addition, we believe there are ten major projects currently under development worldwide that we believe we could supply between 2020-2025. As a result, we expect our sales volumes of this product to surpass 1 million metric tons during the 2020-2025 period.

We are also experiencing a growing interest in using solar salts in thermal storage solutions not related to CSP technology. Due to their proven performance, solar salts are being tested in industrial heat processes and heat waste solutions. These new applications may open new opportunities for solar salts uses in the near future, such as retrofitting coal plants.

Industrial Chemicals: Our Products

The following table shows our sales volumes of industrial chemicals and total revenues for 2020, 2019 and 2018:

Revenues for industrial chemicals increased to US$160.6 million in 2020 from US$94.9 million in 2019, as a result of higher sales volumes in this business line. Sales volumes in 2020 increased 82.3% compared to sales volumes reported last year.

Industrial Chemicals: Marketing and Customers

We sold our industrial nitrate products in approximately 54 countries in 2020 to approximately 268 customers. One customer accounted for more than 10% of our revenues of industrial chemicals in 2020, accounting for approximately 69%, and our ten largest customers accounted in the aggregate for approximately 79% of such revenues. No supplier accounted for more than 10% of the cost of sales of this business line. We make lease payments to CORFO which are associated with the sale of different products produced in the Salar de Atacama, including lithium carbonate, lithium hydroxide and potassium chloride. See Note 24.2 to our consolidated financial statements for the disclosure of lease payments made to CORFO for all periods presented.

The following table shows the geographical breakdown of our revenues for 2020, 2019 and 2018:

Our industrial chemical products are marketed mainly through our own network of offices, representatives and distributors. We maintain updated inventories of our stocks of sodium nitrate and potassium nitrate, classified according to graduation, to facilitate prompt dispatch from our warehouses. We provide support to our customers and continuously work with them to develop new products and applications for our products.

Industrial Chemicals: Competition

We believe that we are one of the world's largest producers of industrial sodium nitrate and potassium nitrate. In 2020, our estimated market share by volume for industrial potassium nitrate was 73% and for industrial sodium nitrate was 44% (excluding domestic demand in China and India).

Our competitors are mainly based in Europe and Asia, producing sodium nitrate as a by-product of other production processes. In refined grade sodium nitrate, BASF AG, a German corporation, and several producers in China and Eastern Europe are highly competitive. They produce industrial sodium nitrate as a by-product of other production processes. Our industrial sodium nitrate products also compete indirectly with substitute chemicals, including sodium carbonate, sodium sulfate, calcium nitrate and ammonium nitrate, which may be used in certain applications instead of sodium nitrate and are available from a large number of producers worldwide.

Our main competitor in the industrial potassium nitrate business is Haifa, which we estimate had a market share of 16% for 2020. We estimate that our market share was approximately 73% for 2020. Other competitors are mostly based in China.

Producers of industrial sodium nitrate and industrial potassium nitrate compete in the marketplace based on attributes such as product quality, delivery reliability, price, and customer service. Our operation offers both products at high quality and with low cost. In addition, our operation is flexible, allowing us to produce industrial or agricultural nitrates, maximizing our yields and reducing commercial risk. In addition, with certain restrictions, we are able to adapt production from one grade to another depending on market needs.

In the potassium chloride market, we are a relatively small producer, mainly focused on supplying regional needs.

Other Products

SQM also receives income from the commercialization of third-party fertilizers (specialty and commodity). These fertilizers are traded in large volumes worldwide and are used as raw material for our specialty mixes or to complement our product portfolio. We have developed commercial management, supply, flexibility and inventory management capabilities that allow us to adapt to the changing fertilizer market in which we operate and obtain profits from these transactions.

Production Process

Our integrated production process can be classified according to our natural resources:

Caliche Ore Deposits

Caliche ore deposits are located in the First and Second Regions in northern Chile. During 2020, our mining operations concentrated in the First Region where we mainly worked in the mining sector Tente en el Aire and in the mining sectors Nueva Victoria Oeste, Norte and Sur. The Second Region mining operations at the Pampa Blanca site, the El Toco mine (which is part of the María Elena site) and the Pedro de Valdivia site were suspended in March 2010, November 2013 and November 2015, respectively, in an effort to optimize our production facilities with lower production costs.

Caliche ore is found under a layer of barren overburden in seams with variable thickness from twenty centimeters to four meters, and with the overburden varying in thickness between half a meter and two meters.

Before proper mining begins, the exploration stage is carried out, including complete geological reconnaissance, sampling and drilling caliche ore to determine the quality and characteristics of each deposit and treatability tests are performed at a pilot plant. Drill-hole samples are properly identified and tested at our chemical laboratories. With the exploration information on a closed grid pattern of drill holes, the ore evaluation stage provides information for mine planning purposes. Mine planning is done on a long-term basis (ten years), medium-term basis (three to five years) and short-term basis (one year). Once all of this information has been compiled, detailed planning for the exploitation of the mine takes place.

The mining process generally begins with bulldozers first removing the overburden in the mining area. This process is followed by an inspection and review of the drill holes before production drilling and blasting occurs to break the caliche seams. Front-end loaders and bulldozers load the ore onto off-road trucks, which take it to the leaching heaps to be processed.

During 2020, SQM worked with two continuous mining equipment systems to replace the drilling and blasting process for mining some of the caliche ore and obtaining a smaller ore size (under 6 ½ inches) that allows a better metallurgical recovery.

The run of mine ore is loaded in heaps and leached with water to produce concentrated solutions containing iodine, nitrate and potassium. These solutions are then sent to plants where iodine is extracted through both solvent-extraction and blow out processes. The remaining solutions are subsequently sent to solar evaporation ponds where the solutions are evaporated and salts rich in nitrate and potassium are produced. These concentrated salts are then sent to Coya Sur where they are used to produce potassium nitrate and sodium nitrate.

During 2020, the Pedro de Valdivia site generated solutions produced by leaching the mine tailings. These solutions are treated at the iodide plant at Pedro de Valdivia. After iodide is obtained, the remaining solutions, which are rich in nitrate and potassium, are sent to the solar evaporation ponds at Coya Sur in order to be used in the production of potassium nitrate.

Caliche Ore-Derived Products

Caliche ore-derived products are sodium nitrate, potassium nitrate, sodium potassium nitrate and iodine.

Sodium Nitrate

During 2020, sodium nitrate for both agricultural and industrial applications was produced from nitrate salts from our mining operations at Sur Viejo and fed to our new crystallization plant located in Coya Sur, which began operating in December 2019. Crystallized sodium nitrate is an intermediate product that is subsequently processed further at the Coya Sur production plants to produce sodium nitrate and sodium potassium nitrate in different chemical and physical forms, including crystallized and prilled products. Finally, the products are transported by truck to our port facilities in Tocopilla for shipping to customers and distributors worldwide.

Potassium Nitrate

Potassium nitrate is produced at our Coya Sur facility using a production process developed in-house. The brines generated by the leaching process at Pedro de Valdivia are pumped to Coya Sur’s solar evaporation ponds for a nitrate concentration process. After the nitrate concentration process, the brine is pumped to a conversion plant where potassium salts from the Salar de Atacama and nitrate and potassium salts produced at Nueva Victoria or Coya Sur are added. A chemical reaction begins, transforming sodium nitrate into potassium nitrate and discarding formed sodium chloride. This brine is pumped to a crystallization plant, which crystallizes the potassium nitrate by cooling it at atmospheric pressure and separating it from the liquid by centrifuge.

Our current potassium nitrate production capacity at Coya Sur is approximately 1,300,000 metric tons per year. During 2020, we worked on several initiatives to improve productivity, including the commencement of the construction of a new magnesium abatement plant in Sur Viejo which will allow for high content potassium nitrate salt recovery from potassium salts from the Salar de Atacama. This plant will begin the commissioning process in mid-2021. We also began the removal of magnesium in nitrates from Pedro de Valdivia by using high sulfate salts from Pampa Blanca that allow for improved nitrate recovery during the evaporation ponds process.

The potassium nitrate produced at Coya Sur is transported to Tocopilla for shipping and delivery to customers and distributors. All potassium nitrate produced in crystallized or prilled form at Coya Sur has been certified by TÜV-Rheinland under the quality standard ISO 9001:2015.

Sodium Potassium Nitrate

Sodium potassium nitrate is a mixture of approximately two parts sodium nitrate per one part potassium nitrate. We produce sodium potassium nitrate at our Coya Sur prilling facilities using standard, non-patented production methods we have developed. Crystallized sodium nitrate is supplied together with the crystallized potassium nitrate to the prilling plant where it is mixed producing sodium potassium nitrate, which is then melted and prilled. The prilled sodium potassium nitrate is transported to Tocopilla for bulk shipment to customers.

The production process for sodium potassium nitrate is basically the same as that for sodium nitrate and potassium nitrate. With certain production restraints and following market conditions, we may supply sodium nitrate, potassium nitrate or sodium potassium nitrate, either in prilled or crystallized form.

The sodium potassium nitrate produced at Coya Sur is transported to Tocopilla for shipping and delivery to customers and distributors.

Iodine and Iodine Derivatives

During 2020, we produced iodine at our facilities at Nueva Victoria (including the Iris facility) and Pedro de Valdivia. Iodine is extracted from solutions produced by leaching caliche ore.

As in the case of nitrates, the process of extracting iodine from the caliche ore is well established, but variations in the iodine and other chemical contents of the treated ore and other operating parameters require a high level of know-how to manage the process effectively and efficiently.

The solutions resulting from the leaching of caliche ore carry iodine in iodate form. Part of the iodate solution is reduced to iodide using sulfur dioxide, which is produced by combusting (burning) sulfur. The resulting iodide is combined with the rest of the untreated iodate solution to release elemental iodine in low concentrations. The iodine is then extracted from the aqueous solutions and concentrated in iodide form using a solvent extraction and stripping plant in the Pedro de Valdivia and Nueva Victoria facilities and using a blow out plant in the Iris facility. The concentrated iodide is oxidized to metallic iodine, which is then refined through a smelting process and prilled. We have obtained patents in the United States and Chile (Chilean patent number 47,080) for our iodine prilling process.

Prilled iodine is tested for quality control purposes, using international standard procedures that we have implemented. It is then packed in 20 to 50-kilogram drums or 350-to-700-kilogram maxi bags and transported by truck to Antofagasta, Mejillones, or Iquique for export. Our iodine and iodine derivatives production facilities have qualified under the ISO 9001:2015 program, providing third-party certification—by TÜV-Rheinland—of the quality management system. The last recertification process was approved in November 2020.

Our total iodine production in 2020 was 12,118 metric tons: 9,362 metric tons from Nueva Victoria, 1,250 metric tons from Iris, and 1,506 metric tons from Pedro de Valdivia. Nueva Victoria is also equipped to toll iodine from iodide delivered from our other facilities. We have the flexibility to adjust our production according to market conditions. Following the production facility restructuring at Pedro de Valdivia and Nueva Victoria, along with the ramp-up of our new iodide plant in Nueva Victoria, our total current effective production capacity at our iodine production plants is approximately 14,800 metric tons per year. During 2020, we continued the development of the Tente en el Aire project, progressing with making necessary environmental notices and obtaining permits required by governmental authorities. This project expects to incorporate the use of 900 liters per second of seawater, increasing the mine area by more than 40,000 hectares and allowing for increased in production in the project’s first stage of 3,000 tons of iodine and 250,000 tons of nitrate salts.

We use a portion of the iodine we produce to manufacture inorganic iodine derivatives, which are intermediate products used for manufacturing agricultural and nutritional applications, at facilities located near Santiago, Chile. We also produce inorganic and organic iodine derivative products together with Ajay, which purchases iodine from us. In the past, we have primarily sold our iodine derivative products in South America, Africa and Asia, while Ajay and its affiliates have primarily sold their iodine derivative products in North America and Europe.

In September 2010, CONAMA, the Chilean Environmental Evaluation Service, approved the environmental study of our Pampa Hermosa project in the Tarapacá Region of Chile. This environmental permit allows for an increase in the production capacity of our Nueva Victoria operations to 11,000 metric tons of iodine per year and to produce up to 1.2 million metric tons of crystallized nitrates, mine up to 37 million metric tons of caliche per year and use new water rights of up to 665.7 liters per second. In Iris, we are approved for 2,000 metric tons of iodine production per year, with an annual extraction of caliche ore up to 6.48 million metric tons per year. In recent years, we have made investments in order to increase the water capacity in the Nueva Victoria operations from two water sources approved by the environmental study of Pampa Hermosa, expand the capacity of solar evaporation ponds, and implement new areas of mining and collection of solutions. Our current production capacity at Nueva Victoria is approximately 13,000 metric tons per year of iodine (including the Iris operations) and 1,000,000 metric tons per year of nitrates. Additional expansions may be implemented from time to time in the future, depending on market conditions.

Salar de Atacama Brine Deposits

The Salar de Atacama, located approximately 210 kilometers east of Antofagasta, is a salt-encrusted depression in the Atacama Desert, within which lies an underground deposit of brines contained in porous sodium chloride rock fed by an underground inflow from the Andes mountains, which is the result of millions of years of climatic and tectonic impacts. Brines are pumped from depths of 15 to 150 meters below surface, through a field of wells that are located in the Salar de Atacama, distributed in areas authorized for exploitation, and which contain relatively high concentrations of potassium, lithium, sulfates and other minerals.

The brines are estimated to cover a surface of approximately 2,800 square kilometers and contain commercially exploitable deposits of potassium, lithium, sulfates and boron. Concentrations vary at different locations throughout the Salar de Atacama. Our mining exploitation rights to the Salar de Atacama are pursuant to the Lease Agreement, which expires in 2030. The Lease Agreement, as amended in January 2018, permits the Chilean Nuclear Energy Commission (Comisión Chilena de Energía Nuclear) to establish a total accumulated production and sales limit of up to 349,553 metric tons of lithium metallic equivalent (1,860,670 tons of lithium carbonate equivalent), which is in addition to the approximately 64,816 metric tons of lithium metallic equivalent (345,015 tons of lithium carbonate equivalent) remaining from the originally authorized amount. See “Item 3.D. Risk Factors” and “Item 8.A.7 Legal Proceedings.”

For the year ended December 31, 2020, revenues related to products originating from the Salar de Atacama represented 33% of our consolidated revenues, consisting of revenues from our potassium business line and our lithium and derivatives business line for the period. All of our products originating from the Salar de Atacama are derived from our extraction operations under the Lease Agreement. As of December 31, 2020, only 10 years remain on the term of the Lease Agreement.

Products Derived from the Salar de Atacama Brines

The products derived from the Salar de Atacama brines are potassium chloride, potassium salts, lithium chloride solutions, lithium carbonate, lithium hydroxide, lithium salts, potassium sulfate, boric acid, sodium chloride and bischofite (magnesium chloride).

Potassium Chloride

We use potassium chloride in the production of potassium nitrate. Production of our own supplies of potassium chloride provides us with substantial raw material cost savings. We also sell potassium chloride to third parties, primarily as a commodity fertilizer.

In order to produce potassium chloride, brines from the Salar de Atacama are pumped to solar evaporation ponds. Evaporation of the water contained in the brine, results in a crystallized mixture of salts with various content levels of potassium, sodium and magnesium. In the first stage of the evaporation process, sodium chloride salts (halite) precipitate, they are then harvested and removed; these salts have the potential to be used in the copper mining process. In the second stage of the evaporation process, the remaining brine from the first stage is transferred to other evaporation ponds where potassium chloride salts together with sodium chloride (sylvinite) precipitate, these salts are harvested and then sent for treatment at one of the wet potassium chloride plants where potassium chloride is separated by a grinding, flotation, and filtering process. In the final evaporation stage, salts containing magnesium are harvested and eventually can be treated at one of the cold leach plants where magnesium is removed. Part of the potassium chloride is transported approximately 300 kilometers to our Coya Sur facilities via a dedicated truck transport system, where it is used in the production of potassium nitrate. The use of potassium chloride salts as a raw material in Coya Sur allows us to capture significant savings, as it allows us to use potassium salts with different qualities and to avoid buying and importing potassium chloride from external sources.

The remainder of the potassium chloride produced at the Salar de Atacama is shipped to our port in Tocopilla in either crystalized (standard) or granular (compacted) form and then shipped and sold as a commodity fertilizer to third parties. All of our potassium chloride-related plants in the Salar de Atacama currently have a nominal production capacity of up to 2.6 million metric tons per year. Actual production capacity depends on volume, quality and performance of the salts used in the process and quality of the mining resources pumped from the Salar de Atacama. 

The brine that remain in the evaporation pond system after removal of the sodium chloride and potassium chloride generates a concentrated lithium chloride solution, which is used to produce lithium carbonate (as described below) and generates salts rich in magnesium chloride (bischfite) as a by-product.

Lithium Chloride Solution and Lithium Carbonate

After the production and precipitation of the potassium chloride salts, a portion of the solutions remaining is sent to additional solar evaporation ponds adjacent to the potassium evaporation ponds. At this stage, the solution is purified and concentrated by precipitation to remove impurities it may still contain, including calcium, sulfate, potassium, sodium and magnesium, reaching a lithium concentration level of approximately 6%. Next is the process of concentration and purification of the remaining concentrated solution of lithium chloride, which is transported by truck to the Salar del Carmen production facility located near Antofagasta, approximately 195 kilometers southeast of the Salar de Atacama. At this plant, the solution is further purified and treated with sodium carbonate to produce lithium carbonate, which is dried and then, if necessary, compacted and finally packaged for shipment to customers.

The production capacity of our lithium carbonate facility since the end of 2019 has been 70,000 metric tons per year. We are now expanding lithium carbonate capacity to reach 120,000 metric tons per year during 2021.

Future production will depend on the actual volumes and quality of the lithium solutions sent by the Salar de Atacama operations, as well as prevailing market conditions. Our future production will also be subject to the extraction limit described in the Lease Agreement mentioned above. See “—Salar de Atacama Brine Deposits” and “Item 8.A.7 Legal Proceedings.”

Our lithium carbonate production quality assurance program has been certified by TÜV-Rheinland under ISO 9001:2015 since September 2018.

Lithium Hydroxide

Lithium carbonate is sold to customers, and we also use it as a raw material for our lithium hydroxide production, which started operations at the end of 2005. We currently have two lithium hydroxide plants, one of which entered into operations at the end of 2018, and have a total production capacity of 13,500 metric tons per year. These plants are located in the Salar del Carmen, adjacent to our lithium carbonate operations.

In the production process, lithium carbonate is reacted with a lime solution to produce lithium hydroxide brine and calcium carbonate salt. The calcium carbonate salt is removed from the process by filtration and the lithium hydroxide brine is stored in ponds. The brine is then evaporated in a multi-effect evaporator and crystallized to produce lithium hydroxide which is then dried and packaged for shipment to customers.

During 2019 and 2020, we moved forward on an expansion plan which will allow us to produce an additional 8,000 metric tons per year of lithium hydroxide, reaching a total capacity of 21,500 metric tons per year. We believe we will reach this capacity level by the end of 2021.

Our lithium hydroxide production quality assurance program has been certified by TÜV-Rheinland under ISO 9001:2015 since September 2018.

Potassium Sulfate and Boric Acid

Approximately 12 kilometers northeast of the potassium chloride facilities at the Salar de Atacama, we use the brines from the Salar de Atacama to produce potassium sulfate, potassium chloride (as a by-product of the potassium sulfate process) and, depending on market conditions, boric acid. The plant is located in an area of the Salar de Atacama where high sulfate and potassium concentrations are found in the brines to produce potassium sulfate. The brine is pumped to solar evaporation ponds, where sodium chloride salts are precipitated, harvested and put into piles. After further evaporation, the sulfate and potassium salts precipitate in different concentrations and are harvested and sent for processing to the potassium sulfate plant. Potassium sulfate is produced using flotation, concentration and reaction processes, after which it is crystallized, filtered, dried, classified and packaged for shipment.

Production capacity for the potassium sulfate plant is approximately 340,000 metric tons per year, of which approximately 95,000 metric tons correspond to potassium chloride obtained as a by-product of the potassium sulfate process. This capacity is part of the total nominal plant capacity of 2.6 million metric tons per year. In our dual plant complex, we may switch, to some extent, between potassium chloride and potassium sulfate production. Part of the pond system in this area is also used to process potassium chloride brines extracted from the low sulfate concentration areas found in the Salar de Atacama. Depending on the conditions for the optimization of the deposit operation and/or market conditions, potassium sulfate production can be modified to produce potassium chloride.

The principal by-products of the production of potassium sulfate are: (i) non-commercial sodium chloride, which is deposited at sites near the production facility and (ii) remaining solutions, which are re-injected into the Salar de Atacama or returned to the evaporation ponds. The principal by-products of the boric acid production process are remaining solutions that are treated with sodium carbonate to neutralize acidity and then are reinjected into the Salar de Atacama.

Raw Materials

The main raw material that we require in the production of nitrate and iodine is caliche ore, which is obtained from our surface mines. The main raw material in the production of potassium chloride, lithium carbonate and potassium sulfate is the brine extracted from our operations at the Salar de Atacama.

Other important raw materials are sodium carbonate (used for lithium carbonate production, sulfuric acid, kerosene, anti-caking and anti-dust agents, ammonium nitrate (used for the preparation of explosives in the mining operations), woven bags for packaging our final products, electricity acquired from electric utilities companies, and liquefied natural gas and fuel oil for heat generation. Our raw material costs (excluding caliche ore and salar brines and including energy) represented approximately 16% of our cost of sales in 2020.

Since 2017, we have been connected to the central grid, which supplies electricity to the majority of cities and industries in Chile. We have several electricity supply agreements signed with major producers in Chile, which are within the contract terms. Our electricity needs are primarily covered by the Electrical Energy Supply Agreement that we entered into with AES Gener S.A. on December 31, 2012. Pursuant to the terms of the Electrical Energy Supply Agreement, we are required to purchase an amount of electricity that exceeds the amount that we estimate we will need for our operations. The excess amount is sold at marginal cost, which could result in a material loss for us.

For our supply of liquefied natural gas, we maintain a five-year contract with Engie, which was executed in 2019. In addition, we have a supply of liquefied petroleum gas (LPG) from Lipigas in the Salar del Carmen and the Salar de Atacama.

We obtain ammonium nitrate, sulfuric acid, kerosene and soda ash from several large suppliers, mainly in Chile and the United States, under long-term contracts or general agreements, some of which contain provisions for annual revisions of prices, quantities and deliveries. Diesel fuel is obtained under contracts that provide fuel at international market prices.

We believe that all of our contracts and agreements with third-party suppliers with respect to our main raw materials contain standard and customary commercial terms and conditions.

Water Supply

We hold water rights for the supply of surface and subterranean water near our production facilities. The main sources of water for our nitrate and iodine facilities at Pedro de Valdivia, María Elena and Coya Sur are the Loa and San Salvador rivers, which run near our production facilities. Water for our Nueva Victoria and Salar de Atacama facilities is obtained from wells near the production facilities. In addition, we buy water from third parties for our production processes at the Salar del Carmen lithium carbonate and lithium hydroxide plants, and we also purchase potable water from local utility companies. We have not experienced significant difficulties obtaining the necessary water to conduct our operations.

Government Regulations

Regulations in Chile Generally

We are subject to the full range of government regulations and supervision generally applicable to companies engaged in business in Chile, including labor laws, social security laws, public health laws, consumer protection laws, tax laws, environmental laws, free competition laws, and securities laws. These include regulations to ensure sanitary and safety conditions in manufacturing plants.

We conduct our mining operations pursuant to judicial exploration concessions and exploitation concessions granted pursuant to applicable Chilean law. Exploitation concessions essentially grant a perpetual right (with the exception of the Salar de Atacama rights, which have been leased to us until 2030) to conduct mining operations in the areas covered by such concessions, provided that annual concession fees are paid. Exploration concessions permit us to explore for mineral resources on the land covered thereby for a specified period of time, and to subsequently request a corresponding exploitation concession.

Under Law No. 16,319 that created the Chilean Nuclear Energy Commission (Comisión Chilena de Energía Nuclear), or “CCHEN”, we have an obligation to the CCHEN regarding the exploitation and sale of lithium from the Salar de Atacama, which prohibits the use of lithium for nuclear fusion. In addition, CCHEN has imposed quotas that limit the total tonnage of lithium authorized to be sold, along with other conditions.

We also hold water use rights granted by the respective administrative authorities and which enable us to have a supply of water from rivers or wells near our production facilities sufficient to meet our current operating requirements. See “Item 3.D. Risk Factors—Risks Relating to Chile—Changes to the Chilean Constitution could impact a wide range of rights, including mining rights, water rights and property rights generally, and could affect our business, results of operations and financial condition.” and “—Changes in water rights laws and other regulations could affect our operating costs.” The Chilean Constitution, the Water Code and related regulations are subject to change, which could have a material adverse impact on our business, financial condition and results of operations.

We operate port facilities at Tocopilla, Chile for the shipment of products and the delivery of raw materials in conformity with maritime concessions, which have been granted by the respective administrative authority. These concessions are normally renewable on application, provided that such facilities are used as authorized and annual concession fees are paid.

In 2005, Law No. 20,026, known as the Law to Establish a Specific Tax on Mining Activity” (Ley que Establece un Impuesto Específico a la Actividad Minera or the “Royalty Law”), established a royalty tax to be applied to mining activities developed in Chile. In 2010, modifications were made to the law and taxes were increased.

On September 29, 2014, the Tax Reform was published, introducing significant changes to the Chilean tax system and strengthening the powers of the Chilean Internal Revenue Service to control and prevent tax evasion. Then, on February 8, 2016, Law No. 20,899 was published which “Simplifies the Income Tax System and Perfects Other Legal Tax Provisions”. Subsequently, on February 24, 2020, Law No.21,210 was published, which “Modernizes the Tax Legislation”. As a result of these reforms, open stock corporations, such as SQM, are subject to the general rules. The corporate tax rate that applies to us increased to 27% in 2018.

The Chilean government may again decide to levy additional taxes on mining companies or other corporations in Chile, and such taxes could have a material adverse impact on our business, financial condition and results of operations.

We are also subject to the Chilean Labor Code and the Subcontracting Law, which are overseen by the Labor Authority (Dirección del Trabajo), the National Geology and Mining Service (Servicio Nacional de Geología y Minería or “Sernageomin”), and the National Health Service. Recent changes to these laws and their application may have a material adverse effect on our business, financial condition and results of operations. See “Item 3.D. Risk Factors—Risks Relating to Our Business—We are exposed to labor strikes and labor liabilities that could impact our production levels and costs.”

In addition, we are subject to Law No. 20,393, which establishes criminal liability for legal entities, for the crimes of (a) asset laundering, (b) financing terrorism and (c) bribery. Potential sanctions for violations under this law could include (i) fines, (ii) loss of certain governmental benefits during a given period, (iii) a temporary or permanent bar against the corporation executing contracts with governmental entities, and (iv) dissolution of corporation.

We are subject to the Securities Law and Law No. 18,046 on Corporations (Ley de Sociedades Anónimas or the “Chilean Corporations Act”), which regulates corporate governance of public companies. Specifically, the Chilean Corporations Act regulates, among other things, independent director requirements, disclosure obligations to the general public and to the CMF, as well as regulations relating to the use of inside information, the independence of external auditors, and procedures for the analysis of transactions with related parties. See “Item 6.C. Board Practices” and “Item 7.B. Related Party Transactions.”

On March 2, 2021, the congress approved a bill to strengthen the financial market in Chile, which includes the following provisions: (a) Amends Law 18,045 (Securities Market Law), mainly in the following matters: (i) a prohibition was established for directors, managers, administrators and principal executives of an issuer of publicly offered securities, as well as their relatives, to carry out transactions on securities issued by the issuer, within thirty days prior to the disclosure of the latter's quarterly or annual financial statements; (ii) regulates the interconnection of stock exchanges; (iii) increased the penalties of article 59 and modified, expanded and added criminalized conducts; (iv) established that the information provided to investors or the general public containing recommendations to acquire, maintain or dispose of publicly offered securities, or that implies the definition of target prices, must comply with the requirements established by the CMF; (b) Amends Law 18. 046 (Corporations Law), mainly in the following matters: (i) it adds, as a presumption of guilt of directors, the approval of related party transactions in contravention of the applicable rules; (ii) it modifies rules applicable to independent directors and the directors' committee; and (iii) it modifies the rules for approval of related party transactions for open corporations; (c) Regulates in detail the provision of investment advisory services, which will be subject to the supervision of the CMF and those who habitually provide investment advisory services must be previously registered in the Register maintained for this purpose by the CMF and may only provide services while they are registered in it. This regulation will become effective ninety days after the CMF issues the general rule. Such regulation shall be issued within twelve months after the publication of this law; (d) It amends DL 3500 (Pension System), mainly regarding changes to the regulation of pension advisory services. This regulation will become effective on the first business day of the third month following the publication of this law; (e) Amends DFL 251 (Insurance Companies, Corporations and Stock Exchanges) and creates the consultation system; (f) Amends Law 19,913 (Financial Analysis Unit), especially in procedural matters; (g) Amends DL 3,538 (CMF), mainly in the following matters: (i) penalties for audited persons are increased, from a ceiling of UF 15,000 to UF 100,000, in both cases, with the possibility of increasing it five times in case of recidivism; and (ii) the figure of the "Anonymous Whistleblower" is created for collaboration with investigations; (h) Amends the Commercial Code, mainly in insurance matters; (i) Amends Law 18,010 (Money Lending Operations), mainly in the following matters: (i) establishes that default interest may not be applied jointly or additionally, on the same amount, with any other interest and its capitalization is prohibited; and (ii) establishes that the entities supervised by the CMF, including massive fund placement entities, may charge commissions with respect to money credit operations to the extent that such commissions comply with the requirements, rules and conditions established by the CMF through General Rule and, in any case, to the extent that they correspond to consideration for real and effectively rendered services. Commissions that do not comply with the requirements shall be considered interest. In addition, the regulations shall establish objective criteria for the determination of commissions, which must be calculated based on the cost of rendering the service. The general rule to be issued by the CMF shall be issued within twelve months following the publication of this law, without prejudice to the date determined therein for its entry into force. Please note that this bill to strengthen the financial market in chile was approved by the Congress, but it has not been yet enacted nor published in the Official Gazette.

There are currently no material legal or administrative proceedings pending against us except as discussed under “Item 8.A.7 Legal Proceedings”, in Note 22 to our Consolidated Financial Statements and below under “Safety, Health and Environmental Regulations in Chile.”

Safety, Health and Environmental Regulations in Chile

Our operations in Chile are subject to both national and local regulations related to safety, health and environmental protection. In Chile, the main regulations on these matters that are applicable to us are the Mine Health and Safety Act of 1989 (Reglamento de Seguridad Minera or the “Mine Health and Safety Act”), the Health Code (Código Sanitario), the Health and Basic Conditions Act of 1999 (Reglamento sobre Condiciones Sanitarias y Ambientales Básicas en los Lugares de Trabajo or the “Health and Basic Conditions Act”), the Subcontracting Law, the Environmental Law of 1994, amended in 2010 (Ley sobre Bases Generales del Medio Ambiente or the “Environmental Law”) and Law No.16744 of the Labor Code relating to workplace accidents and occupational diseases (“Law No. 16744”).

Health and safety at work are fundamental aspects in the management of mining operations, which is why we have made constant efforts to maintain good health and safety conditions for the people working at our mining sites and facilities. In addition to the role played by us in this important matter, the Chilean government has a regulatory role, enacting and enforcing regulations in order to protect and ensure the health and safety of workers. The Chilean government, acting through the Ministry of Labor and Social Security, Ministry of Health, and the Sernageomin, performs health and safety inspections at the mining sites and oversees mining projects, among other tasks, and it has exclusive powers to enforce standards related to environmental conditions and the health and safety of the people performing activities related to mining.

The regulations set in Law No. 16744 and the Mine Health and Safety Act protect workers and nearby communities from health and safety hazards. The Health and Basic Conditions Act along with our Internal Mining Standards (Reglamentos Internos Mineros) establish guidelines to maintain a workplace where safety and health risks are managed appropriately. We are subject to the general provisions of the Health and Basic Conditions Act, our own internal standards and the provisions of the Mine Health and Safety Act. In the event of non-compliance, the Ministry of Health and relevant regulatory bodies are entitled to use their enforcement powers to ensure compliance with the law.

In November 2011, the Ministry of Mining enacted Law No. 20,551 that Regulates the Closure of Mining Sites and Facilities (Ley que Regula el Cierre de Faenas e Instalaciones Mineras). This statute entered in force in November 2012 and required all mining sites to present or update their closure plans as of November 2014. SQM has fulfilled this requirement for all of its mining sites and facilities. The main requirements of the law are related to disclosures to the Sernageomin regarding decommissioning plans for each mining site and its facilities, along with the estimated cost to implement such plans. The mining site closure plans are approved by Sernageomin and the corresponding financial assurances are subject to approval by the CMF. In both cases, SQM has received the requisite approvals. During 2020, any required closure plans were updated and presented to Sernageomin in accordance with required deadlines.

The new and modified Chilean Environmental Law defines the Ministry of the Environment as the governmental agency responsible for coordinating and supervising environmental issues. The Environmental Assessment Service is responsible for reviewing environmental assessments of new projects or significant modifications of existing ones, and the decision to grant or reject environmental permits rests with the Environmental Assessment Commission. On the other hand, the Superintendence for the Environment is responsible for supervising environmental performance during the construction, operation and closure of the projects that have been evaluated for environmental permits, and it is also responsible for enforcing compliance with prevention and atmospheric decontamination plans. The Environmental Law also promotes citizen participation in project evaluation and implementation, providing more opportunities for observations or objections to be made during the environmental evaluation process. Annually, the Superintendence for the Environment audits a sample of approved projects to verify compliance with the environmental permits, and it may pursue fines or sanctions if applicable, which can be challenged in the Environmental Court.

We continuously monitor the impact of our operations on the environment and on the health of our employees and other persons who may be affected by such operations. We have made modifications to our facilities in an effort to eliminate any adverse impacts. Also, over time, new environmental standards and regulations have been enacted, which have required minor adjustments or modifications of our operations. We anticipate that additional laws and regulations will be enacted over time with respect to environmental matters. There can be no assurance that future legislative or regulatory developments will not impose new restrictions on our operations. We are committed to continuously improving our environmental performance through our Environmental Management System (“EMS”). We strive to be leaders in sustainability at a national and international level. In 2020, we began the ISO 14.001 certification process for our operations in the Salar de Atacama and Salar del Carmen. This certification is being overseen by TÜV-Rheinland. We participate in voluntary evaluations with companies such as Ecovadis and seek international certifications such as the Responsible Conduct certification from the Chilean Industrial Chemicals Association, which applies to our operations at Nueva Victoria, and the Protect & Sustain certification from the International Fertilizer Association, which applies to our operations at Coya Sur, the Salar de Atacama, Tocopilla, Antofagasta and Santiago. In September 2020, in the Salar de Atacama, we began a self-assessment process, which is the first step in IRMA’s rigorous responsible mining certification process.

We have submitted and will continue to submit environmental impact assessment studies related to our projects to the governmental authorities. We require the authorization of these submissions in order to maintain and to increase our production capacity.

International Regulations

We are subject to complex regulatory requirements in the various jurisdictions in which we operate, including the following implemented during 2020:

The European Union’s European Food Safety Authority initiated a revision of the perchlorate limits in food that have been in force and effect since June 2015. On May 20, 2020, the European Commission adopted Regulation (EU) 2020/685 which sets out limits for perchlorate in certain foods. Regulation (EU) 2020/685 did not alter the previously established limit of 50 parts-per-million for perchlorate in fertilizer (as set forth in Regulation (EU) 2019/1102), and thus will allow our fertilizer products to be sold in the European Union without issue.

In addition, Regulation (EU) 2017/542 came into force in the European Union, pursuant to which SQM notified the European Union’s Poison Notification Centre (PCN) of the classification and labelling information for 83 mixtures from our specialty plant nutrition and potassium business lines sold by our three European subsidiaries.

On March 12, 2019, Australia approved the new Industrial Chemicals (General) Rules 2019, which regulates the import and production of industrial chemicals and replaces the current regulations. This new regulation which entered into force on July 1, 2020, establishes the import requirements for chemical substances for the product and the importer. It applies to iodine imports by SQM Oceania in Australia. The SQM Oceania registry for the importation of iodine was updated under “Industrial Chemicals (General) Rules 2019”, in June 2020 and before the deadline of July 1, 2020.

On May 25, 2019, Japan updated its standards for classification and labeling of chemical products (JIS Z 7252: 2019 and 7253: 2019) to certify them with the sixth version of the UN-GHS. This update has a transition period of three years and will require review of safety data sheets and labeling of the products that SQM sells in Japan, in 2020-2021. The process of reviewing Safety Data Sheets and labeling of the products that SQM markets in Japan began, under the JIS Z 7252: 2019 & 7253: 2019 standards, which has a deadline until May 2022. The safety sheets were updated in February 2021 and the labels will be updated to December 2021.

In 2020 in South Korea, we began the registration process for three products under the K-REACH regulations, using an Exclusive Representative in order to facilitate the regulatory compliance of our customers in this market. Additionally, with the establishment of SQM’s commercial office in Seoul, South Korea in 2020, the Korean Chemical Management Association (KCMA) was notified of all products to be imported from our lithium and iodine business lines. In 2021, we will begin the process of providing the respective competent authorities, including the Korean Ministry of Labor and Employment, with safety data sheets for all products sold in South Korea under the K-OSHA regulations.

In 2020 in China, we completed the standardization of the registration of all of our lithium, iodine and nitrate products.

As a result of the occurrence of Brexit in 2020, the chemical regulations set forth in EU REACH (Registration, Evaluation, Authorisation and restriction of Chemicals) were brought into United Kingdom law on January 1, 2021 and entitled UK REACH. SQM will be required to complete a second registration process for products sold in the United Kingdom. We are currently preparing the relevant survey and expect to complete the pre-registration process in 2021.

In compliance with the Technical Regulation of the Eurasian Economic Union on Safety of Chemical Products (TR EAEU 041/2017), also known as Eurasia REACH (Eurasia’s equivalent to EU REACH), in 2020 we reported all direct agricultural and industrial products, and also fertilizer mixtures, of all of our business lines sold in the Eurasian Economic Union, which includes Russia. With this reporting, we are not required to register under TR EAEU 041/2017.

In December 2020, we completed the pre-registration of all of our products sold in Turkey in compliance with the deadline under Turkey’s “KKDIK” (Turkey’s equivalent to EU REACH).

In October 2020, we provided an updated notification of all of our products sold in the United States under the TSCA-CDR regulations before the United States Environmental Protection Agency.

On November 27, 2020, Chilean Customs issued exempt resolution No. 3421, pursuant to which Chile’s lithium export control procedures have been modified to include the export of lithium carnalite, lithium sulfate and lithium phosphate.

Research and Development, Patents and Licenses

See “Item 5.C. Research and Development, Patents and Licenses.”

4.C. Organizational Structure

All of our principal operating subsidiaries are essentially wholly owned, except for SQMC, which is approximately 61% owned by us and whose shares are listed and traded on the Santiago Stock Exchange, and Ajay SQM Chile S.A., which is 51% owned by us. The following is a summary of our main subsidiaries as of December 31, 2020.

For a list of all our consolidated subsidiaries, see Note 8 to our Consolidated Financial Statements.

4.D. Property, Plant and Equipment

We carry out our operations through the use of mining rights, production facilities and transportation and storage facilities. Discussion of our mining rights is organized below according to the geographic location of our mining operations. Our caliche ore mining interests are located throughout the valley of the Tarapacá and Antofagasta regions of northern Chile (in a part of the country known as “el Norte Grande”). From caliche ore, we produce products based on nitrates and iodine, and caliche also contains concentrations of potassium. Our mining interests in the brine deposits of the Salar de Atacama are found within the Atacama Desert, in the eastern region of el Norte Grande. From these brines we primarily produce products based on potassium, sulfate, and lithium.

The map below shows the location of our principal mining operations and the exploitation and exploration mining concessions that have been granted to us, as well as the mining properties that we lease from Corfo:

Mining Concessions

Mining Concessions for the Exploration and Exploitation of Caliche Ore Mining Resources

We hold our mining rights pursuant to mining concessions for exploration and exploitation of mining resources that have been granted pursuant to applicable law in Chile:

A Mining Exploration Concession is generally obtained for purposes of evaluating the mineral resources in a defined area. If the holder of the Mining Exploration Concession determines that the area does not contain commercially exploitable mineral resources, the Mining Exploration Concession is usually allowed to lapse. An application also can be made for a Mining Exploitation Concession without first having obtained a Mining Exploration Concession for the area involved.

As of December 31, 2020, the surface area covered by Mining Exploitation Concessions that have been granted in relation to the caliche resources of our mining sites is approximately 558,562 hectares. In addition, as of December 31, 2020, the surface area covered by Mining Exploration Concessions in relation to the caliche resources of our mining sites is approximately 400 hectares. We have not requested additional mining rights.

Mining Concessions for the Exploitation of Brines at the Salar de Atacama

As of December 31, 2020, our subsidiary SQM Salar held exclusive rights to exploit the mineral resources in an area covering approximately 140,000 hectares of land in the Salar de Atacama in northern Chile, of which SQM Salar is only entitled to exploit the mineral resources in 81,920 hectares. These rights are owned by Corfo and leased to SQM Salar pursuant to the Lease Agreement. Corfo cannot unilaterally amend the Lease Agreement, and the rights to exploit the resources cannot be transferred. The Lease Agreement provides for SQM Salar to (i) make quarterly lease payments to Corfo based on product sales from leased mining properties and annual contributions to research and development, to local communities, to the Antofagasta Regional Government and to the municipalities of San Pedro de Atacama, María Elena and Antofagasta, (ii) maintain Corfo’s rights over the Mining Exploitation Concessions and (iii) make annual payments to the Chilean government for such concession rights. The Lease Agreement was entered into in 1993 and expires on December 31, 2030.

Under the terms of the Project Agreement, Corfo has agreed that it will not permit any other person to explore, exploit or mine any mineral resources in the approximately 140,000 hectares area of the Salar de Atacama mentioned above. The Project Agreement expires on December 31, 2030.

SQM Salar holds an additional 239,942 hectares of constituted Mining Exploitation Concessions in areas near the Salar de Atacama, which correspond to mining reserves that have not been exploited. SQM Salar also holds Mining Exploitation Concessions that are in the process of being granted covering 1,430 hectares in areas near the Salar de Atacama.

In addition, as of December 31, 2020, SQM Salar held Mining Exploration Concessions covering approximately 8,200 hectares and had applied for additional Mining Exploration Concessions of approximately 8,700 hectares. Exploration rights are valid for a period of two years, after which we can (i) request a Mining Exploitation Concession for the land, (ii) request an extension of the Mining Exploration Concession for an additional two years (the extension only applies to a reduced surface area equal to 50% of the initial area) or (iii) allow the concession to expire.

According to the terms of the Lease Agreement, with respect to lithium production, the CCHEN established a total accumulated extraction limit set as amended by the Corfo Arbitration Agreement in January 2018, up to 349,553 metric tons of lithium metallic equivalent (1,860,670 tons of lithium carbonate equivalent), which is in addition to the approximately 64,816 metric tons of lithium metallic equivalent (345,015 tons of lithium carbonate equivalent) remaining from the originally authorized amount in the aggregate for all periods while the Lease Agreement is in force. As of December 31, 2020, only 10 years remain on the term of the Lease Agreement. See “Item 3.D. Risk Factors” and “Item 8.A.7 Legal Proceedings.”

Concessions Generally

As of December 31, 2020, approximately 98% of SQM’s mining interests were held pursuant to Mining Exploitation Concessions and 1% pursuant to Mining Exploration Concessions. Of the Mining Exploitation Concessions, approximately 97% already have been granted pursuant to applicable Chilean law, and approximately 3% are in the process of being granted. Of the Mining Exploration Concessions, approximately 8|% already have been granted pursuant to applicable Chilean law, and approximately 19% are in the process of being granted.

In 2020, we made payments of US$6.5 million to the Chilean government for Mining Exploration and Exploitation Concessions, including the concessions we lease from Corfo. These payments do not include the payments we made directly to Corfo pursuant to the Lease Agreement, according to the percentages of the sales price of products produced using brines from the Salar de Atacama.

The following table shows the Mining Exploitation and Exploration Concessions held by SQM, including the mining properties we lease from Corfo, as of December 31, 2020:

The majority of the Mining Exploitation Concessions held by SQM were requested primarily for non-metallic mining purposes. However, a small percentage of our Mining Exploration Concessions were requested for metallic mining purposes. The annual payment to the Chilean government for this group of concessions is higher.

Geological studies over mining properties that were requested primarily for non-metallic mining purposes may show that the concession area is of interest for metallic mining purposes, in which case we must inform the Sernageomin, indicating that the type of substance contained by such Mining Concessions has changed, for purposes of the annual payment for these rights.

Caliche: Facilities and Reserves

Caliche: Facilities

During 2020, our mining operations concentrated in the First Region where we mainly worked in the mining sector Tente en el Aire and in the mining sectors Nueva Victoria Norte. In November 2015, the mining and nitrate operations at Pedro de Valdivia were suspended, and iodine production was reduced at the Pedro de Valdivia site, in order to take advantage of the highly efficient production facilities at Nueva Victoria. Operations at the Pampa Blanca site were suspended in 2010, and heap leaching operations at the María Elena site were suspended in October 2013, although iodine processing continued until 2017.

The Nueva Victoria mine and facilities are located 140 kilometers southeast of Iquique and are accessible by highway. Since 2007, the Nueva Victoria mine includes the mining properties Soronal, Mapocho and Iris. At this site, we use caliche to produce salts rich in nitrates and iodine, through heap leaching and the use of solar evaporation ponds. The main production facilities at this site include the operation centers for the heap leaching process, the iodide and iodine plants at Nueva Victoria and Iris and the evaporation ponds at the Sur Viejo sector of the site. The areas currently being mined are located approximately 25 kilometers northeast of Nueva Victoria. Solar energy and electricity are the primary sources of power for this operation.

The mining facilities at Pampa Blanca, which is located 100 kilometers northeast of Antofagasta, have been suspended since March 2010. At this site, we used caliche to produce nitrates and iodine through heap leaching and the use of solar evaporation ponds. The main production facilities at this site included the operation centers for the heap leaching system and the iodide plant. Electricity was the primary source of power for this operation.

The Pedro de Valdivia mine and facilities are located 170 kilometers northeast of Antofagasta and are accessible by highway. At this site, we used caliche to produce nitrates and iodine through vat leaching and solar evaporation ponds. The main production facilities at this site include the crushing, vat leaching, fines processing, nitrate crystallization plant, and iodide and iodine plants. In November 2015, the mining and nitrate operations at Pedro de Valdivia were suspended, and iodine production was reduced. Electricity, natural gas and fuel oil are the primary sources of power for this operation.

The María Elena mine and facilities, named El Toco, are located 220 kilometers northeast of Antofagasta and are accessible by highway. Until February 2010, caliche was used at this facility to produce nitrates and iodine through vat leaching. Subsequently, these facilities were equipped to produce nitrates and iodine through the use of heap leaching and solar evaporation ponds. Heap leaching operations at this site were suspended in October 2013. During 2017, we continued to produce solutions rich in iodine and nitrates by leaching the mine tailings. which were treated at the iodide plant at María Elena, and subsequently the prilled iodine is produced at Pedro de Valdivia. This process was discontinued at the end of 2017.

Caliche: Reserves

Our in-house staff of geologists and mining engineers prepares our estimates of caliche ore reserves. The Proven and Probable Reserve figures presented below are estimates and may be subject to modifications due to natural factors that affect the distribution of mineral grades, which would, in turn, modify the recovery of nitrate and iodine. Therefore, no assurance can be given that the indicated levels of recovery of nitrates and iodine will be realized.

We estimate ore reserves based on evaluations, performed by engineers and geologists, of assay values derived from sampling of drill-holes and other openings. Drill-holes have been made at different space intervals in order to recognize mining resources. Normally, we start with 400x400 meters and then we reduce spacing to 200x200 meters, 100x100 meters and 50x50 meters. The geological occurrence of caliche ore is unique and different from other metallic and non-metallic minerals. Caliche ore is found in large horizontal layers at depths ranging from one to four meters and has an overburden between zero and two meters. This horizontal layering is a natural geological condition and allows the Company to estimate the continuity of the caliche bed based on surface geological reconnaissance and analysis of samples and trenches. Mineral resources can be calculated using the information from the drill-hole sampling.

A Mineral Resource is a concentration or occurrence of natural, solid, inorganic or fossilized organic material in or on the Earth’s crust in such form or quantity and of such grade or quality that it has reasonable prospects for economic extraction. The location, quantity, grade, geological characteristics and continuity of a mineral resource are known, estimated or interpreted from specific geological, metallurgical and technological evidence.

A Measured Resource is the part of a Mineral Resource for which tonnage, densities, shape, physical characteristics, grade and mineral content can be estimated with a high level of confidence. The estimate is based on detailed exploration, sampling and testing information gathered through appropriate sampling techniques from locations such as outcrops, trenches, and exploratory drill holes.

An Indicated Mineral Resource is the part of a Mineral Resource for which tonnage, densities, shape, physical characteristics, grade and mineral content can be estimated with a reasonable level of confidence. The estimate is based on detailed exploration, sampling and testing information gathered through appropriate sampling techniques from locations such as outcrops, trenches and exploratory drill holes.

According to our experience in caliche ore, the grid pattern drill-holes with spacing equal to or less than 100 meters produce data on the caliche resources that is sufficiently defined to consider them Measured Resources and then, adjusting for technical, economic and legal aspects, as Proven Reserves. These reserves are obtained using the Kriging Method and the application of operating parameters to obtain economically profitable reserves.

Similarly, the information obtained from detailed geologic work and samples taken from grid pattern drill-holes with spacing equal to or less than 200 meters can be used to determine Indicated Resources. By adjusting such Indicated Resources to account for technical, economic and legal factors, it is possible to calculate Probable Reserves. Probable Reserves are calculated by using a polygon-based methodology and have an uncertainty or margin of error greater than that of Proven Reserves. However, the degree of certainty of Probable Reserves is high enough to assume continuity between points of observation.

Proven Reserves are the economically mineable part of a Measured Resource. The calculation of the reserves includes the application of mining parameters including maximum overburden, minimum thickness of caliche ore, stripping ratio, cutoff grade and application of dilution factors to the grade values. Appropriate assessments, including pre-feasibility studies or feasibility studies, have been carried out and include consideration of metallurgical, economic, marketing, legal, environmental, social and governmental factors. These assessments demonstrate at the time of reporting that extraction is reasonably justified.

Probable Reserves are the economically mineable part of an Indicated Resource and in some cases a Measured Resource. The calculation of the reserves includes the application of mining parameters including maximum overburden, minimum thickness of caliche ore, stripping ratio, cutoff grade and application of dilution factors to the grade values. Appropriate assessments, including pre-feasibility studies, have been carried out or are in process and include consideration of metallurgical, economic, marketing, legal, environmental, social and governmental factors. These assessments demonstrate at the time of reporting that extraction is reasonably justified.

The estimates of Proven Reserves of caliche ore at each of our mines as of December 31, 2020 are set forth below. The Company holds 100% of the concession rights for each of these mines.

In addition, the estimates of our Probable Reserves of caliche ore at each of our principal mines as of December 31, 2020, are as follows:

The complete technical supporting documentation for the information set forth in the table above was prepared for each mine by the geologist Vladimir Tejerina and other engineering professionals employed by SQM and validated by Ms. Marta Aguilera and Mr. Marco Lema.

Ms. Marta Aguilera is a geologist with more than 35 years of experience in the field. She is currently employed by SQM as a Senior Consultant for the Mining Production area. Ms. Aguilera is a Competent Person (Persona Competente), as that term is defined under Chilean Law No. 20,235, known as the Law that Regulates the Position of Competent Persons and Creates the Qualifying Committee for Competencies in Mining Resources and Reserves (Ley que Regula la Figura de las Personas Competentes y Crea la Comisión Calificadora de Competencias de Recursos y Reservas Mineras or “Competent Person Law”). She is registered under No. 163 in the Public Registry of Competent Persons in Mining Resources and Reserves in accordance with the Competent Person Law and related regulations. She has worked as a geologist with both metallic and non-metallic deposits, with vast experience in the latter.

Mr. Marco Lema is a civil mining engineer with more than 35 years of experience. He works for SQM as Superintendent of Geology and Engineering in the mining production area. Mr. Lema is a Competent Person (Persona Competente), as that term is defined under Chilean Law No. 20,235, known as the Law that Regulates the Position of Competent Persons and Creates the Qualifying Committee for Competencies in Mining Resources and Reserves (Ley que Regula la Figura de las Personas Competentes y Crea la Comisión Calificadora de Competencias de Recursos y Reservas Mineras or “Competent Person Law”). He has experience working on metallic and non-metallic mine deposits.

Copies of the certificates of qualified competency issued by the Chilean Mining Commission are attached hereto as Exhibits 99.1 and 99.2.

The proven and probable reserves shown above are the result of the evaluation of approximately 18.5% of the total caliche-related mining property of our Company. However, we have explored more intensely the areas in which we believe there is a higher potential of finding high-grade caliche ore minerals. The remaining 81.5% of this area has not been explored or has had limited reconnaissance, which is not sufficient to determine the potential and hypothetical resources. In 2020, we did not carry out basic reconnaissance of new mining properties. With respect to detailed explorations, in 2020, we did not carry out recategorizations of indicated resources. Our 2021 exploration program includes the exploration of the Tente en el Aire sector, which totals 658 hectares, and the basic study of 4,100 hectares of the Mina Oeste and Tente en el Aire Oeste sectors. The reserves shown in these tables are calculated based on properties that are not involved in any legal disputes between SQM and other parties.

Caliche ore is the key raw material used in the production of iodine, specialty plant nutrients and industrial chemicals. The following gross margins for the business lines specified were calculated on the same basis as cut off grades used to estimate our reserves. We expect costs to remain relatively stable in the near future.

We maintain an ongoing program of exploration and resource evaluation on the land surrounding our production mines, and other sites for which we have the appropriate concessions.

Brines from the Salar de Atacama: Facilities and Reserves

Salar de Atacama: Facilites

Salar de Atacama

Our facilities at the Salar de Atacama are located 210 kilometers to the east of the city of Antofagasta and 190 kilometers to the southeast of the city of María Elena. At this site we use brines extracted from the salar to produce potassium chloride, potassium sulfate, boric acid, magnesium chloride salts (bishofite) and lithium chloride solutions, which are subsequently sent to our lithium carbonate plant at the Salar del Carmen for processing. The main production plants at this site include the potassium chloride flotation plants (MOP-H I and II), the potassium carnallite plants (PC I and PC I extension), the potassium sulfate flotation plant (SOP-H), the boric acid plant (ABO), the potassium chloride drying plant (Dual Plant or MOP-S), the potassium chloride compacting plant (MOP-G3), the potassium sulfate drying plant (SOP-S) and the potassium sulfate compacting plant (SOP-G). Solar energy is the primary energy source used for the Salar de Atacama operations.

Salar de Atacama: Reserves

Our in-house staff of hydrogeologists and geologists prepares our estimates of the reserve base of potassium, sulfate, lithium and boron dissolved in brines at the Salar de Atacama. We have exploitation concessions through Corfo covering an area of 81,920 hectares, in which we have carried out geological exploitation, brine sampling and geostatistical analysis. We estimate that our proven and probable reserves as of December 31, 2020 are as follows:

The information set forth in the table above was validated in February 2021 by Messrs. Andrés Fock and Orlando Rojas using information that was prepared by SQM’s hydrogeologists, geologists and engineers and external advisors.

Mr. Fock is a geologist with more than 16 years of experience in the field of mining hydrogeology. He is currently employed by WSP as a Geologist. He is a Competent Person and is registered under No. 226 in the Public Registry of Competent Persons in Mining Resources and Reserves, in accordance with the Competent Person Law. As a hydrogeologist in Chile and abroad, he has evaluated multiple brine-based projects and has experience evaluating resources and reserves.

Mr. Orlando Rojas is a civil mining engineer and independent consultant. He is Partner and Chief Executive Officer of EMI-Ingenieros y Consultores S.A., whose offices are located at Los Domínicos No 7772, Las Condes, Santiago, Chile. He is a member of the Institute of Mining Engineers and is registered under No. 118 in the Public Registry of Competent Persons in Mining Resources and Reserves in accordance with the Competent Person Law and related regulations. He has worked as a mining engineer for 40 years since graduating from university, including more than 34 years working on estimates for reserves and resources.

Copies of the certificates of qualified competency issued by the Chilean Mining Commission for Mr. Fock and Mr. Rojas are attached hereto as Exhibit 99.3 and 99.4.

The cutoff grade for lithium extraction is set at 0.05% Li. The cost of the process is competitive in the market despite a small cost increase due to the expansions in the evaporation area (to reach the required Li concentration) and to the use of additives to maintain the quality of the brine that is used to feed the plant.

A cutoff grade of 1.0% K is used in the calculation, considering a low margin scenario using only MOP-S as and using diluted brine with higher levels of contaminants as the raw material and with recovery yields of approximately 53%, which is on the lower end of the range. In this scenario, considering current market conditions and market conditions from recent years, the production cost of MOP production is still competitive.

The proven and probable reserves are based on production experience, drilling, brine sampling and geo-statistic reservoir modeling in order to estimate brine volumes and their composition. We calculate the reserve base, which is the volume of brine effectively drainable or exploitable in each evaluation unit, by building a three-dimensional block model. The following variables are used to populate the model:

Based on the chemical characteristics, and the volume of brine, we determine the number of metric tons for each of the chemical ions being evaluated. Reserve classification is finally achieved by using geostatistical criteria and hydrogeological knowledge of the units that have been explored, as an indicator between proven and probable reserves. In order to carry out a quantitative evaluation of the lithium and potassium reserves, the Salar Hydrogeology Management used a tool, a numerical model of groundwater flow and transport, which allows evaluating the evolution of the reservoir over time when stressed with different mining extraction plans. This model is calibrated annually and is used for the projection and optimization of the brine supply in the short (2 years) and medium (5 years) term in the Salar de Atacama.

Proven reserves are defined as hydrogeological units with proven historical brine yield production, and a quality and piezometric brine monitoring network to control brine evolution over time. and that they have a monitoring network to control the chemical and piezometric evolution of the brine over time. Probable reserves are concentrated in those hydrogeological units identified with exploration data that support the continuity of the resource and its extraction capacity by pumping, but without historical brine production.

Probable reserves and inferred resources are being continually explored in order to be able to reclassify them as proven reserves and indicated or measured resources, respectively. This exploration includes systematic packer testing, chemical brine sampling and long-term pilot production pumping tests.

We consider chemical parameters to determine the process to be applied to the brines. These parameters are used to estimate potential restrictions on production yields, and the economic feasibility of producing such commercial products as potassium chloride, potassium sulfate, lithium carbonate and boric acid is determined on the basis of the evaluation.

Complementing the reserves information, SQM has an environmental impact assessment (RCA 226/06) which defines a maximum brine extraction until the end of the Lease Agreement (December 31, 2030).

Considering the authorized maximum net brine production rates under (RCA 226/06) and a voluntary extraction under RCA 226/06, a total of 492 million cubic meters of brine is expected to be extracted from the producing wells, corresponding to 1.05 million metric tons of lithium. Considering the voluntary reduction plan announced by SQM during 2020, a total of 342 million cubic meters of brine will be extracted from the producing wells, corresponding to 0.82 million metric tons of lithium. On the other hand, the proven and probable in situ base reserve, within the authorized environmental extraction area (RCA 226/06), corresponds to 1,533 million cubic meters of brine, corresponding to 5.3 million metric tons of lithium, sufficient to satisfy the demand in both cases (RCA 226/06 and the Voluntary Extraction Reduction Plan) for the project until the end of the concession.

Brines from the Salar de Atacama are the key raw material used in the production of potassium chloride and potassium sulfate, and lithium and its derivatives. The following gross margins for the business lines specified were calculated on the same basis as cut off grades used to estimate our reserves. We expect costs to remain relatively stable in the near future.

Other Production Facilities

Coya Sur

The Coya Sur site is located approximately 15 kilometers south of María Elena, and production activities undertaken there are associated with the production of potassium nitrate and finished products. The main production plants at this site include four potassium nitrate plants with a total capacity of 1,300,000 metric tons per year. There are also five production lines for crystallized nitrates, with a total capacity of 1,200,000 metric tons per year, and a prilling plant with a capacity of 360,000 metric tons per year. The potassium nitrate produced at Coya Sur is an intermediate product that is used as a raw material for the production of finished products (crystallized nitrates and prilled nitrates). Therefore, the production capacities listed above are not independent of one another and cannot be added together to obtain an overall total capacity. Natural gas is the main source of energy for our Coya Sur operation.

Salar del Carmen

The Salar del Carmen site is located approximately 15 kilometers to the east of Antofagasta. The production plants at this facility include the lithium carbonate plant, with a production capacity of 70,000 metric tons per year, and the lithium hydroxide plant, with a production capacity of 13,500 metric tons per year. Electricity and natural gas are the main sources of energy for our Salar del Carmen operation.

The following table provides a summary of our production facilities as of December 31, 2020:

We directly or indirectly through subsidiaries own, lease or hold concessions over the facilities at which we carry out our operations. Such facilities are free of any material liens, pledges or encumbrances, and we believe they are suitable and adequate for the business we conduct in them.

Transportation and Storage Facilities

The transportation of our products is carried out by trucks that are operated by dedicated third parties through long-term contracts. Furthermore, we own port and storage facilities for the transportation and management of finished products and consumable materials.

Our main centers for the production and storage of raw materials are the Nueva Victoria, Coya Sur and Salar de Atacama facilities. Other facilities include chemical plants for the finished products of lithium carbonate and lithium hydroxide at the Salar del Carmen plant. The Port of Tocopilla terminal, which we own, has a surface area of approximately 22 hectares and is the principal facility for the storage and shipment of our bulk products and packaged potassium chloride (MOP) and nitrates.

The nitrate finished products are produced at our Coya Sur facilities and then transported via trucks to the Port of Tocopilla terminal where they are stored and shipped in bulk or packaged in polypropylene bags, polyethylene or polypropylene FIBC big bags. The latter can also be transported and stored in an alternative port (Mejillones) for later shipment.

The potassium chloride is produced at our Salar de Atacama facilities and we transport it by truck, either to the Port of Tocopilla terminal, the Coya Sur facility or the alternative Port of Mejillones for its shipment. The product transported to Coya Sur is an intermediate product that is used as a raw material for the production of potassium nitrate. The product transported to the Port of Tocopilla is a final product that will be shipped or transported to the client or affiliate. The nitrate raw material for the production of potassium nitrate in Coya Sur is currently produced at Nueva Victoria.

The lithium chloride solution, which contains a high concentration of boron, produced at our Salar de Atacama facilities, is transported to the lithium carbon plant in the Salar del Carmen area where the finished lithium carbonate is produced. Part of the lithium carbonate is provided to the adjacent lithium hydroxide plant where the finished lithium hydroxide is produced. These two products are packed in packaging of distinct characteristics such as polyethylene bags, multi-layer or polypropylene FIBC big bags, stored within the same facilities and secured in storerooms. Thereafter, they are consolidated into containers that are transported by trucks to a transit warehouse or directly to port terminals for their subsequent shipment. The port terminals used are currently suited to receive container ships and are situated in Antofagasta, Mejillones and Iquique.

Iodine obtained from the same caliche used for the production of nitrates, is processed, packaged and stored exclusively in the Pedro de Valdivia and Nueva Victoria facilities. The packaging used for iodine are drums and polypropylene FIBC big bags with an internal polyethylene bag and oxygen barrier, which at the time of transportation are consolidated into containers and sent by truck to port terminals suited for their management, principally located in Antofagasta, Mejillones and Iquique. Thereafter, they are sent to distinct markets by container ship or by truck to Santiago where iodine derivatives are produced in the Ajay-SQM Chile plants.

The Port of Tocopilla terminal facilities are located approximately 186 kilometers north of Antofagasta, approximately 124 kilometers west of María Elena and Coya Sur and 372 kilometers to the west of Salar de Atacama. Our affiliate, Servicios Integrales de Tránsitos y Transferencias S.A. (SIT), operates facilities for the shipment of products and the delivery of certain raw materials based on renewable concessions granted by Chilean regulatory authorities, provided that the facilities are used in accordance with the authorization granted and we pay an annual concession fee. The Port of Tocopilla terminal facilities include a truck weighing machine that confirms product entry into the port and transfers the product to distinct storage zones, a piezometer within the shipping system to carry out bulk product loaded onto ships, a crane with a 40 ton capacity for the loading of sealed product onto ships and a nitrate mixing facility.

The storage facilities consist of a system of six silos, with a total storage capacity of 55,000 metric tons, and a mixed storage area of open storehouses with a total storage capacity of approximately 250,000 metric tons. In addition, to fulfill future storage needs, we will continue to make investments in accordance with the investment plan outlined by management. The products are also put into bags at the Port of Tocopilla terminal facilities where the bagging capacity is established by two bag packaging machines, one for sacks and polypropylene FIBC big bags and one for FFS polyethylene. The products that are packaged in Tocopilla may be subsequently shipped at the same port or may also be consolidated into trucks or containers for its subsequent dispatch to clients by land or sea through containers from other ports, principally located in Antofagasta, Mejillones and Iquique.

For the transportation of bulk product, the transportation belt system extends across the coastline to deliver products directly to the hatches of bulk cargo ships. The nominal load capacity of this shipping system is 1,200 tons per hour. The transportation of packaged product is carried out utilizing the same bulk cargo ships using trailers without motors located in the dock and loaded by a crane with a 40 ton capacity from the Port of Tocopilla terminal. Thereafter, they are towed and unloaded using ship cranes to the respective warehouses.

We normally contract bulk cargo ships to transfer the product from the Port of Tocopilla terminal to our hubs around the world or to clients directly, who, in certain instances, use their own contracted vessels for delivery.

Tocopilla processes related to the reception, handling, storage and shipment of bulk/packaged nitrates produced at Coya Sur are certified by the third-party organization TÜV-Rheinland under the quality standard ISO 9001:2015.

Computer System

In addition to the above-listed facilities, we operate varies computer and information systems linking our principal subsidiaries to our operating and administrative facilities throughout Chile, and other parts of the world. The computer and information system is used mainly for finance, accounting, human resources, monitoring of supplies and inventories, billing, quality control, research activities and production process and maintenance control. The mainframe computing system is located at our offices in Santiago and our Chilean and international subsidiaries are interconnected with each other, through data links.

In addition, we have cloud technologies, which allow us to support new business processes and respond quickly and at low cost to changing conditions of our business and of the market.

A cyber security review is being carried out to highlight possible risks and mitigate them, including raising awareness among our users related to best process and computational use practices.