china water affairs group limited (chinese: 中國水務集團有限公司; pinyin: zhōngguó shuǐwù jítuán yǒuxiàngōngsī) (sehk:855) 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 (group) limited (chinese: 易達興業電子(集團)有限公司), and was listed on the main board of hong kong stock exchange in 1998. in 2003, it was sold to mr. duan chuan-liang (chinese: 段傳良), who worked in the ministry of water resources of peoples republic of china, and was renamed to china silver dragon group limited (chinese: 中國銀龍集團有限公司).[1] in 2005, the company completed its business restructuring and officially changed its name to china water affairs group limited.[2]