Totetsu Kogyo Co., Ltd. operates in railway track maintenance, civil engineering, architectural, and environmental businesses in Japan. It repairs and reconstructs railway tracks and builds new tracks for the Tohoku Shinkansen and other public and private sector clients. The company also constructs, renovates, and reinforces bridges, tunnels, motorways, and multilevel crossings, and installs railway platform edge doors. In addition, it builds and maintains station buildings, apartment houses, office buildings, hotels, shops, and schools, and provides environmental services such as solar power systems, building greening, drainage systems, asbestos removal, and energy conservation systems for air conditioning. Incorporated in 1943, it is headquartered in Tokyo, Japan.