Tosoh Corporation operates as a global producer and distributor of a broad range of chemical products, encompassing basic, petrochemical, specialty, and fine chemicals. The company's operations are segmented into four main divisions: Petrochemical, Chlor-Alkali, Specialty, and Engineering. Its extensive product catalog includes advanced materials such as battery components, meticulously fabricated quartzware, silica glass, thin film deposition materials, and specialized zeolites for catalysts and molecular sieves. Tosoh also provides various zirconia-based products, including injection mold components, compounds, grinding and dispersion media, and fine beads and powders. The firm's offerings extend to chromatographic columns, media, and diagnostic systems for clinical applications. In the construction sector, Tosoh supplies both Portland cement and blast-furnace slag cement. Furthermore, it produces essential industrial chemicals like caustic soda, vinyl chloride monomer, calcium hypochlorite, and sodium bicarbonate. Its petrochemical portfolio features key compounds such as ethylene, propylene, C4 fractions, tertiary butyl alcohol, cumene, and aromatic compounds. Additionally, Tosoh manufactures a diverse array of specialty chemicals, including ethyleneamines, bromine, hydrobromic acids, flame retardants, non-aqueous solvents, chelating agents, ethylene dichloride, and sodium styrenesulfonate. An extensive selection of polymers is also part of its production, covering ethylene vinyl-acetate copolymers, adhesive polymers, both low and high-density polyethylene, synthetic rubbers, functional polymers, and polyvinyl chloride pastes. Its polyurethane range includes crucial components like methylene diphenyl diisocyanate (MDI), toluene diisocyanate (TDI), hexamethylene diisocyanate (HDI), as well as various adhesives, coating resins, elastomers, polyisocyanates for paints, and polyols. Beyond manufacturing, Tosoh is engaged in the development and sale of water treatment systems and participates in construction and repair services. The company's products and solutions serve a wide spectrum of industries, including the chemical and petrochemical, construction, automotive, consumer electronics, information technology, bioscience, and environmental sectors. Established in 1935, Tosoh Corporation maintains its headquarters in Minato, Japan.