King Wan Corp. Ltd. is an investment holding company, which engages in the provision of mechanical and electrical engineering services. It operates through the the following segments: Plumbing and Sanitary; Electrical; Toilet Rental; Investment Holding; and Others. The Plumbing and Sanitay segment provides plumbing and sanitary services includes the design and installation of water distribution systems and pipe network for sewage and waste water drainage. The Electrical segment focuses in the electrical engineering services thet design and install electricity distribution systems, fire protection, alarm systems, communications, and security systems. The Toilet Rental segment comprises of rental and operating of mobile lavatories and other facilities. The Investment Holding segment consists of investment in the associates and joint venture. The Others segment involves in the other activities which do not fall into the other activities of the other segments. The company was founded by Chua Kim Hua in 1977 and is headquartered in Singapore.