About Tokuyama
Our Business
Tokuyama was established in 1918 in Tokuyama Cho (present-day Shunan City), Yamaguchi Prefecture in order to produce soda ash domestically, remedying what was then Japan’s total reliance on imports. Together with the growth and development of Japan’s chemical’s industry, Tokuyama also began producing cement and added a broad array of chemicals to its product lineup. In addition to chemicals, the company’s main business fields today are: high-purity chemicals for electronics manufacturing and thermal management materials essential for the production of cutting-edge semiconductors; life sciences, including eyeglass lens materials and dental materials and equipment; and the environmental business, including recycling.
The Chemicals Business Division manufactures and sells a wide array of chlorine derivatives. Among these are soda ash and caustic soda, which the Company has continued to produce since its foundation, as well as methylene chloride, which uses the chlorine generated as a by-product at the time of caustic soda production as a raw material. Tokuyama is the only manufacturer of soda ash in Japan that is used as a raw material for such items as glass and detergents. Through its Chemicals Business Division, the Company also manufactures related products including sodium bicarbonate and calcium chloride at grades suitable for use in food additives. These products have gained a strong reputation among customers for their high quality.
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The Electronic Materials Business Division meets customer needs with products that help promote technological advancement in the semiconductor industry. These products include high-purity polycrystalline silicon and high-purity trichlorosilane, used as raw materials for semiconductor wafers, the IPA SE series for cleaning and drying cutting-edge semiconductors, and high-purity TMAH (SD series), used as high-performance cleaning agents and positive-type photoresist developers.
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The Advanced Materials Business Division offers a wide range of products that are essential to the foundation of diverse industrial platforms. In addition to fillers such as rubber and elastomers, these products include various silica powders used as polishing abrasives and sealing materials for semiconductors, as well as aluminum nitride powder used as a substrate material for semiconductor manufacturing equipment and power devices, and as a heat dissipation filler for resin. Additionally, the Division is focusing on the development and commercialization of silicon nitride and boron nitride in order to meet diverse customer needs in a range of industrial fields that require materials with high performance in heat dissipation and durability.
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The Cement Business Division manufactures and sells numerous cement products that support social infrastructure. Boasting the largest single factory cement production capacity in Japan, the Division pioneered efforts to engage in the domestic recycling of industrial waste. Working to ensure the effective use of limited resources, every effort is being made to contribute to the formation of a recycling-based society. From a product lineup perspective, the Division also manufactures and sells such related products as cement type stabilizers. Covering a wide range of activities that extend from general civil engineering work to dam and pier as well as high-rise building construction, the Division offers a lineup that is in tune with each application and requirement condition. Through these means, every effort is being made to meet customer demand.
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Tokuyama offers a broad range of life science products, including dental materials, medical diagnosis systems, eyeglass-related materials and APIs and intermediates. These products supporting people’s health are mainly based on the cutting-edge R&D in the Tsukuba Research Laboratory. These diverse small-batch manufactured products are manufactured at the Kashima Factory under rigorous quality control systems. Tokuyama is also outstanding its business in polypropylene microporous film for sanitary materials both in and outside of Japan. These films are impermeable to water but let air and moisture flow through, meeting demand in China and other emerging countries.
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Throughout Tokuyama’s century-plus in business, the common sense of minimizing waste by promoting the utilization of waste and byproducts has been firmly entrenched in the company’s operations. The ECO-Business Division was launched in April 2021, following the consolidation of all pre-existing environment-related businesses at Tokuyama Group companies. Perceiving a wealth of business opportunities in the environmental initiatives and regulations springing up around the world, Tokuyama aims to help build a sustainable world by bringing to the global market its waste-water processing technologies leveraging ion exchange membranes, its technologies for recycling waste gypsum boards, and establishing new recycling technologies for solar cell modules.
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