Demco Public Company Limited is a Thailand-based company engaged in the engineering services and steel structure production and trading. The Company acts as a contractor of electric system construction and service work in the field of electric engineering and all types of telecommunication. The Company operates in the design, supply construction and installation on turnkey basis of electricity distribution line, high voltage transmission line, substation design and construction, electrical and mechanical system, energy conservation, telecommunication tower, including production and supply steel structure for high voltage transmission line, telecommunication system, and billboard under DEMCO trademark. In addition, it is a producer of galvanized steel structure and a trader of electric system equipment. It has subsidiaries including Demco Industry Co., Ltd., Demco Power Co., Ltd., among others. On July 4, 2014, it established a subsidiary, namely CIN (Thailand) Company Limited.