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Tokuyama Corporation (株式会社トクヤマ, Kabushiki-gaisha Tokuyama) is a Japanese, Tokyo-based chemical company^[2] and the world's fourth largest silicon manufacturer.^[3]

The company was founded as Nihon Soda Kogyo Co., Ltd., a producer of soda ash in 1918 by Katsujiro Iwai. It changed name in 1936 to Tokuyama Soda Co., Ltd. and in 1994 to its present name.^[4] It is listed on the Tokyo Stock Exchange and is a component of the Nikkei 225 stock index.^[5]

The company operates across Japan, Taiwan, China, South Korea, Singapore, Malaysia, Australia, United States, and Germany.^[6]

Business segments and products

Chemicals business

Soda ash and calcium chloride
Chlor-alkali and vinyl chloride products: caustic soda (liquid, flake), propylene oxide, vinyl chloride monomer
New organic chemicals: isopropyl alcohol

Cement business

Portland cement: ordinary, early-strength, medium-heat
Recycling services
Fresco Giclee

Specialty products business

Electronic materials: polycrystalline silicon
Fumed silica
SHAPAL products: aluminum nitride (powder, granules)
IC chemicals and the cleaning system: high purity chemicals for electronics manufacturing, positive-type photoresist

Life and amenity business

Fine Chemicals: photochromic dye materials, hard coating solutions for plastic lenses, pharmaceutical bulk ingredients, amino radical protectants
Microporous film: polyethylene porous film
Dental materials

Source