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 network for sewage and wastewater drainage. Electrical segment focuses on the electrical engineering services that design and install electricity distribution systems, fire protection, alarm systems, and security systems. Toilet Rental segment consists of rental and operation of mobile lavatories. Investment Holding segment consists of investment in the associates and joint venture. Others segment involves in the other activities that do not fall into activities of the other segments.