Cosmo Chemical Co., Ltd. is a chemical materials company based in Seoul, South Korea, founded in 1968. It manufactures and sells titanium dioxide (TiO2) anatase, including COTIOX KA-100 for rubbers, paints, papers, and resins, and COTIOX KA-300 for textiles, plastics, and inks. The company also provides ferrous sulfate heptahydrate, poly ferric sulfate solution, cobalt sulfate in liquid and solid forms, and gypsum. Additionally, it offers textiles, food, and electronic products.