Shinwa Co., Ltd. operates as a holding company that engages in the manufacture and supply of structural materials for construction. It operates through the Temporary Materials and Logistics Equipment divisions. The Temporary Materials division sells temporary materials used on construction sites. It also provides rental services for temporary materials and contract manufacturing of original equipment manufacturer (OEM) products. The Logistics Equipment division offers logistics equipment used for storage and transportation of goods at factories, warehouses, and construction sites. It also manufactures automobile parts, pallets for storage and transportation of glass for liquid crystal panels, and steel racks. The company was founded by Kaoru Aoyama on September 1, 1977 and is headquartered in Kaizu, Japan.