1, Beijing Wanbangda Environmental Protection Technology Co., Ltd. 2, Yangzhou Lu Cheng Environmental Engineering Co., Ltd. 3, Beijing Sander Environmental Protection Group Co., Ltd. 4, Beijing Bi Shuiyuan Technology Co., Ltd. 5, Veolia Water Engineering (Beijing) Co., Ltd. 6, GE Water Treatment and Process Treatment Company 7, Shenzhen Jindalai Environmental Protection Co., Ltd. 8, Beijing Meihua Boda Environmental Engineering Co., Ltd. 9, Beijing Construction Engineering Jinyuan Environmental Development Co., Ltd.
10, Wuhan Urban Environmental Protection Engineering Technology Co., Ltd. 1 1, Jiangsu Tianyu Environmental Protection Group Co., Ltd.
12, Anhui guozhen environmental protection and energy saving technology co., ltd. 13, Jiangsu Yao Peng environmental protection group co., ltd.
14, First Aihua (Tianjin) Municipal Environmental Engineering Co., Ltd.
15, Puhua Holdings Limited
16, zhongkecheng environmental protection group co., ltd. 17, dehewei (Beijing) environmental engineering co., ltd. 18, standard water co., ltd.
19, Fujian New World Environmental Technology Co., Ltd. 20, Zhejiang Oumei Environmental Engineering Co., Ltd. 2 1, Tongfang Co., Ltd.
22. Zhejiang Dean New Technology Development Co., Ltd. 23. Guangdong xindayu environmental engineering co., ltd.