Koatsu Kogyo Co.,Ltd., along with its subsidiary, is a Japanese firm primarily focused on civil engineering and construction. Their work spans the entire project lifecycle, from design to oversight, and heavily utilizes both prestressed and conventional concrete. The company's diverse activities are organized into four main business areas: Construction, Concrete Product Manufacturing, Real Estate, and Electricity Sales. Within its construction arm, Koatsu Kogyo builds and repairs various structures, including bridges, tanks, and foundations. The concrete products division is responsible for producing and selling concrete items, as well as leasing out formworks for block production. Furthermore, the company is active in the real estate sector, handling property leases and sales, and also generates and distributes solar power. Established in 1959, Koatsu Kogyo Co.,Ltd. is headquartered in Kagoshima, Japan.