King Wan Corp Ltd engages in the provision of mechanical and electrical engineering services for the building and construction industry. It operates in five segments. The Plumbing and Sanitary segment provides services comprising the design and installation of water distribution systems and pipe networks for sewage and wastewater drainage. The electrical segment focuses on the electrical engineering services that design and install electricity distribution systems, fire protection, alarm systems, and security systems. The toilet rental segment consists of the rental and operation of mobile lavatories. The investment holding segment consists of investments in associates and joint ventures. Others segment involves other activities that do not fall into the activities of the other segments.