Sumitomo Seika Chemicals Co., Ltd. engages in the manufacture and sale of chemical products. It operates through the following segments: Functional Chemicals and Water Absorbent Resin. 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 company was founded on July 20, 1944 and is headquartered in Osaka, Japan.