Tokuyama Corp. engages in the manufacture and sale of chemicals used for the construction and industrial industries. It operates through the following segments: Chemicals, Specialty Products, Cement, Life and Amenity, and Others. The Chemicals segment produces and markets caustic soda, soda ash, and chlorine. The Specialty Products segment covers the development and sale of polycrystalline silicon, fumed silica, precipitated silica, aluminum nitride, pharmaceutical ingredients, and intermediates. The Cement segment handles the production and distribution of cement and cement related products that include ordinary portland cement, blast-furnace slag cement, ready-mixed concrete, cement-type stabilizer, and waste treatments. The Life and Amenity segment comprises of polyolefin film, plastic window sashes, medical diagnosis systems, dental materials and equipment, gas sensors, and ion exchange membranes. The company was founded by Katsujiro Iwai on February 16, 1918 and is headquartered in Tokyo, Japan.