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, Facilities Management, and Investment Holding. The Mechanical Engineering segment is involved 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 high and low tension electrical distribution systems, communications, audio-visual, and securities systems. The Facilities Management provides maintenance, repair, and replacement services for commercial buildings, hotels, schools, and universities. The Investment Holding segment includes fair value gains and losses through profit or loss in quoted equity securities. The company was founded by Chek Heng Foo on January 4, 2001 and is headquartered in Singapore.