東ソー (Tosoh) 

Tosoh Corporation manufactures and sells basic chemicals, petrochemicals, specialty products, and fine chemicals. The company provides advance materials, including battery materials, fabricated quartzware, silica glass, thin film depositions, and zeolites for catalysts and molecular sieves; and zirconia injection mold components and compounds, grinding and dispersion media, and fine beads and powders. It also offers chromatographic columns, and media and diagnostic systems; clinical diagnostic systems; Portland cement and blast-furnace slag cement; and caustic soda, vinyl chloride monomer, calcium hypochlorite, and sodium bicarbonate. In addition, the company provides ethylene, propylene, C4 fraction, cumene, and aromatic compounds; and ethyleneamines, bromine, hydrobromic acids, flame retardants, non-aqueous solvents, chelating agents, ethylene dichloride, and sodium styrenesulfonate. Further, it offers polymers, such as ethylene vinyl-acetate copolymers, adhesive polymers, low and high-density polyethylene products, synthetic rubbers, functional polymers, and polyvinyl chloride pastes; and polyurethanes (PU), including methylene diphenyl diisocyanate, hexamethylene diisocyanate, adhesives, coating resins, elastomers, polyisocyanates for PU paints, and polyols. It serves agriculture, automotive, building and construction, bulk commodities, communications, consumer goods, diagnostics, eco-business, electrical and electronics, food, medical, packaging, personal care, pharmaceuticals, photovoltaics, semiconductor, textiles and clothing, and transportation markets. The company was incorporated in 1935 and is headquartered in Chuo-ku, Japan.