Profile: Sumitomo Seika Chemicals Co Ltd manufactures fine chemical products, functional polymers and gas products. Our product inludes organic sulfur chemicals, organic halogen chemicals and aromatic surlfur compounds. We also offer product like thiophenol, p-chlorothiophenol, p-tert-butylthiophenol and bis(4-tert-butyl-1,2-dithiophenolate) copper tetra-n-butylammonium. We are accredited with ISO 14001 standard.