Sekisui Chemical (積水化学工業株式会社) is a company that operates high-performance plastics, urban infrastructure and environmental products, housing, and medical businesses. It manufactures and sells plastic products, including fine particles, sealants and adhesives, tapes, and films. The company also engages in the manufacture, construction, and sale of prefabricated modular houses, renovation, and other home-related services. In addition, Sekisui Chemical produces film-type lithium-ion batteries, pipe materials, foam, and resin, as well as in vitro diagnostic reagents and test equipment.