Sumitomo Seika Chemicals Company, Limited. engages in the manufacture and sale of absorbent polymers, functional chemicals, and gases in Japan and internationally. The company offers sodium polyacrylate-based super absorbent polymer water absorbent materials used in hygiene products for disposable diapers, baby diapers, sanitary napkins, and incontinent pads; water blocking tapes used in industrial materials for power and optical cables, and water-swelling rubber; and provides water absorbent pads, freshness agents, water retention agents, anti-dewing agent, pet sheets, and water absorbent sheets. It also offers functional chemicals, such as water-soluble and water-absorbent polymers, emulsions, latex products, powdered plastics, fine chemicals, functional polymers, and polar solvents for use in personal care products, performance adhesives and rubber products, and battery and energy materials. In addition, the company provides semiconductor gases, such as ammonia, nitrous oxide, carbon monoxide, nitric oxide, diborane, hydrogen chloride, dichlorosilane, methane, propylene, ethylene, propane, hydrogen sulfide, sulfur dioxide, boron trichloride, tetrafluoromethane, carbon dioxide, nitrogen, oxygen, argon, helium, and hydrogen; specialty gasses comprising JCSS standard gases, liquefied and compressed pure gases, standard gases, mixed gases, standard measuring atmosphere environmental pollution gases, and other standard/producible substance list gases, as well as precision pressure regulators; and industrial chemicals, including thiophenol, thioanisole, sulfolane, thionyl chloride, sulfuryl chloride, and ammonia water. Further, it offers pressure swing adsorption (PSA) system PSA gas generators; various chemical plants; and storage equipment. The company was founded in 1944 and is headquartered in Osaka, Japan.