Xing Rong Investment (000598): Xing Rong Investment is a large group of water supply and drainage integration in the western region, is the most important sewage treatment enterprises in Chengdu. Business area based in Chengdu, facing the whole country, has successfully expanded to Xi'an, Lanzhou, Yinchuan, Shenzhen, Hainan and other places. In 2010 and 2011, the company won the national "Environmental Enterprise Competitiveness Award" for two consecutive years, and was honored as "2011 Top Ten Influential Enterprises in Water Industry" by China Water Network.
Central Plains Environmental Protection (000544): Central Plains Environmental Protection's main business is urban wastewater treatment and centralized heat supply in cities, the business has a strong regional nature, the main operating area for the Zhengzhou region, the market share in the region for 50% of the wastewater treatment and 40% of the heat supply. On the basis of ensuring the stable operation of the two main businesses, the company gives full play to the advantages of listed companies in investment and financing, and actively invests in local public utilities, better serving the people's livelihood and urban construction, and making greater contributions to the sewage treatment and urban centralized heating in Zhengzhou City and the surrounding areas.
China Environmental Protection (600874): China's venture environmental protection is the main business of sewage treatment of listed companies, the company has a number of sewage treatment plants such as Jizhuangzi, Dongjiao and the country's best sewage treatment research centers, has formed a complete industrial chain from the research and design to the construction of the sewage industry and then to the operation of the complete industry chain. The company's sewage treatment capacity has reached a total of 1.49 million cubic meters / day, so that the centralized sewage treatment rate of Tianjin urban areas more than 80%. 2003, the company began to develop the outbound market, in 2004, the company entered the water market in Chibi, Hubei, and in 2005, the successful development of Yunnan Qujing, Jiangsu Province, BaoYing, Hubei, HongHu water market, 2006, the company entered the water market in Hangzhou, Zhejiang Province and Shandong Province, and in 2007, the company entered the water market, and the company is the largest water treatment plant in China. In 2006, the company has entered the water market in Hangzhou, Zhejiang Province and Wendeng, Shandong Province. In 2007, the company successfully opened the water market in Northwest China through the Xi'an project, and in 2008, the company successfully entered the water market in Anguo, Hebei Province, and gradually formed the development areas of North China, Central and South China, Yunnan and Guizhou, Jiangsu, Zhejiang and Northwest China, realizing a new pattern of nationwide market development with a focus on the whole country.