Koyo International Ltd. is an investment holding company, which engages in the provision of mechanical and electrical engineering services. It operates through the following segments: Mechanical Engineering, Electrical Engineering, and Facilities Management. The Mechanical Engineering segment involves in designing and installing air-conditioning and mechanical ventilation, plumbing and sanitary installation, fire prevention and protection system, and integrated systems. The Electrical Engineering focuses on planning and putting a high and low tension electrical distribution systems and communications, audio-visual, and securities systems. The Facilities Management gives maintenance, repair, and replacement services for commercial buildings, hotels, schools, and universities. The company was founded by Chek Heng Foo on January 4, 2001 and is headquartered in Singapore.