Koatsu Kogyo Co.,Ltd., together with its subsidiary, designs, constructs, contracts, and supervises civil engineering and construction work using prestressed and general concrete in Japan. The company operates through Construction Business, Concrete Product Business, Real Estate Business, and Electricity Sales Business segments. It constructs and repairs bridges, tanks, and foundation works; manufactures and sells concrete products; and leases concrete product formworks for blocks. The company also engages in the leasing and sale of real estate properties; and generates and sells solar power. Koatsu Kogyo Co.,Ltd. was incorporated in 1959 and is headquartered in Kagoshima, Japan.