Koyo International Limited (Koyo) is an investment holding company. The Company is engaged in the business of providing integrated mechanical and electrical engineering (M&E) services. The Company operates through four segments: Mechanical Engineering, which designs and installs air-conditioning and mechanical ventilation, plumbing and sanitary installation, fire prevention and protection system, as well as integrated systems; Electrical Engineering, which designs and installs high and low tension electrical distribution systems, as well as communications, audio-visual and securities systems; Facilities Management, which provides maintenance, repair and replacement services, and Supply of Construction Materials, which is engaged in the supply of construction materials, including reclamation sand, construction sand, armor rock, granite and other aggregates. It offers a suite of clean technologies, such as solar heat collector arrays and hot water storage tanks.