Sumitomo Seika Chemicals Co., Ltd. engages in the manufacture and sale of chemical products. It operates through the following segments: Functional Chemicals, Water Absorbent Resin, and Gases and Engineering. The Functional Chemicals segment provides pharmaceutical products, water-soluble polymers, fine particle polymers, and functional products. The Water Absorbent Resin manufactures and sells water-absorbent resin used in disposable diapers, sanitary napkins, and industrial materials. The Gases and Engineering segment deals with medical gas, chemical gas, electronics gas, gas generators, and general chemical engineering equipment. The company was founded on July 20, 1944 and is headquartered in Osaka, Japan.