M.C.S. Steel Public Company Limited, together with its subsidiaries, designs, produces, and distributes structural steel products for building construction in Thailand, China, and Japan. It fabricates high-rise steel structures, power plants, bridges, and general steel works. The company also provides welder training, real estate activities, engineering and design services for stockyards and built-up H and built-up columns, parts, CNC auto drill line, fabrication and welding services, and quality assurance, pre-assembly, shot blasting/painting, and transportation/stock services. It exports to Japan and internationally. Formerly M.C.S. HOKOKU CO., LTD., it changed its name to M.C.S. Steel Public Company Limited in 2001. Incorporated in 1992, it is headquartered in Phra Nakhon Si Ayutthaya, Thailand.