Wuhan Sanzhen Industry Holding Co., Ltd. engages in the management of urban water supply, and drainage system. It operates through the following business segments: Tap Water production, Sewage treatment, Tunnel construction & operation, Infrastructure construction and Environmental engineering. The tap water segment handles water services, sewage treatment, and tunnel operation business investment and management. The Water segment supplies municipal tap water. The Sewage treatment segment provides regional franchises of sewage treatment businesses. The Tunnel operation segment handles the investment, construction and operation of the Wuhan Yangtze River Tunnel. The Environmental engineering segment provides professional water and environmental protection technology and engineering services. The company was founded in 1997 and is headquartered in Wuhan, China.