M.C.S. Steel Public Company Limited engages in the design, production, and distribution of structural steel products for building construction in Thailand, China, and Japan. The company fabricates high-rise steel structure buildings, power plants, bridges, and general steel works. It is also involved in the welder training and real estate activities; and provides engineering and design services, as well as parts. The company was formerly known as M.C.S. HOKOKU CO., LTD. and changed its name to M.C.S. Steel Public Company Limited in 2001. M.C.S. Steel Public Company Limited was incorporated in 1992 and is headquartered in Phra Nakhon Si Ayutthaya, Thailand.