Koatsu Kogyo Co., Ltd. engages in the manufacture and sale of concrete. It operates through the following segments: Construction, Concrete Products, Real Estate, and Electric Sales Business. The Construction segment handles construction contracts such as bridge construction, foundation construction, and bridge repair construction. The Concrete Product segment manages the manufacture and sale of concrete secondary products and formworks. The Real Estate segment covers the real estate property leasing business. The Electric Sales Business segment deals with solar power generation. The company was founded by Chikaga Uemura in November 10, 1959 and is headquartered in Kagoshima, Japan.