Gecoss Corporation rents and sells construction machinery and steel products in Japan. It rents and sells temporary construction materials such as H-shaped steel, steel sheet piles, iron plates, covering plates, and earth retaining materials. The company also designs, manufactures, and sells erection and demolition work for mountain retaining and gantry, pile driving and pulling, and obstacle removal; rents, sells, and manufactures temporary bridges, station building platforms, stairs, shield mounts, road bridges, and bridge fall prevention hardware; rents cars; and rents construction equipment including aerial work platforms, backhoes, generators, light temporary construction equipment, and unmanned construction robots. In addition, it undertakes design and construction of pile punching, erection and demolition, and soil cement column wall construction, and provides planning, design, and technical support services for temporary construction works. Incorporated in 1946, the company is headquartered in Tokyo, Japan.