Totetsu Kogyo 

Totetsu Kogyo Co., Ltd. engages in the railway track maintenance, civil engineering, architectural, and environmental businesses in Japan. The company is involved in the repair and reconstruction of railway tracks, as well as building new railway tracks for the Tohoku Shinkansen, and other public and private sectors. It also engages in the construction, renovation, and reinforcement of elevated and standard bridges, tunnels, motorways, and multilevel crossings, as well as setting up railway platform edge doors for passenger protection. In addition, the company is involved in the construction and maintenance of station buildings for railway lines, apartment houses, office buildings, hotels, shops, schools, etc. Further, it provides environmental technology and services, such as constructing solar power generation systems, greening of buildings, draining disposal systems, removing asbestos, implementing energy conservation systems for air conditioning, etc. The company was founded in 1943 and is headquartered in Tokyo, Japan.