Koyo International Ltd is a Singapore-based investment holding company and is involved in the business of providing integrated mechanical and electrical engineering (M&E) services. The operating segments of the group are Mechanical Engineering, which designs and installs air-conditioning & mechanical ventilation, plumbing & sanitary installation, fire prevention, and protection systems as well as integrated systems; Electrical Engineering segment designs and install high & low tension electrical distribution systems, as well as communications, audio-visual, and securities systems; and Facilities Management segment provide maintenance, repair & replacement services for commercial buildings, hotels, schools, and university, and Investment holding segment.