M.C.S. Steel Public Company Limited is a Thailand-based company engaged in the steel business. The company manufactures and sells large structured steel fabrications for construction projects both domestically and internationally. The Company offers two types of large steel fabrications, including built-up box columns and built-up beams. It operates a production plant in Ayutthaya province. In addition, it manufactures normal steel fabrications, such as roof fabrications, column boxes or girders used for domestic constructions. Its customers include contractors and general customers with construction projects. Its subsidiaries include Tanaka Welding Center Co., Ltd. operating construction business in Thailand and Natsu Steel Structure Co., Ltd. engaged in fabrication, erection and drawing of steel structures.