China Water Affairs Group Limited is a water supply company headquartered in Hong Kong. It was the earliest water company listed in Hong Kong, and is the only Hong Kong listed company that focuses on water supply business. The company, formerly an electronics company, was established in 1993 with the name of Cedar Base Electronic Limited, and was listed on the main board of Hong Kong Stock Exchange in 1998. In 2003, it was sold to Mr. Duan Chuan-liang, who worked in the Ministry of Water Resources of People's Republic of China, and was renamed to China Silver Dragon Group Limited. In 2005, the company completed its business restructuring and officially changed its name to China Water Affairs Group Limited. The company's main business is to invest in, construct and operate urban water supply, sewage treatment and related value-added services in Mainland China. Wikipedia