• Hefei Gas Group Co., Ltd. of Anhui Province

• Changsha Xin’ao Gas Co., Ltd. of Hunan Province

• Wuhan Natural Gas Co., Ltd. of Hubei Province

• Xiangfan Daming Natural Gas Co., Ltd. of Hubei Province

• Dalian Coal Gas Company of Liaoning Province

• Dandong Coal Gas Rebuild Engineering Headquarter of Liaoning Province

• Xianyang Coal Gas Company of Shaanxi Province

• Yan’an Gas Company of Shanxi Province

• Yantai Natural Gas Engineering Preparation Department of Shandong Province

• Coal Gas Modification Headquarter of Dandong, Liaoning Province

• Guozhen Energy Development Co. Ltd. of Fuyang, Anhui Province

• Chengdu Water Supply Company of Sichuan Province

• Guangzhou Water Supply Company of Guangdong Province

• Hangzhou Water Supply Company of Zhejiang Province

• Zhengzhou Water Supply Company of Henan Province

• Lanzhou Water Supply Company of Gansu Province

• Xi’an Water Supply Company of Shanxi Province

• Harbin Water Supply Company of Heilongjiang Province

• Dalian Water Supply Company of Liaoning Province

• Jinan Water Supply Company of Shandong Province

• Shijiazhuang Water Supply Company of Hebei Province