What are the wastewater treatment companies in central China? To compare the strength of the kind, thank you!

1, North Control Water Group Co.

2, China Water Investment Co.

3, Veolia Water Group

4, Beijing Sund Environmental Protection Group Co.

5, in the environmental protection and water investment Co.

6, China-France Water Investment Co.

7, China Energy Conservation and Environmental Protection Group Co.

8, Jinzhou Environmental Group Co.

8, Jinzhou Environmental Group Co.

9, Chongqing Water Group Co.

10, Beijing Shouchuang Co.

11, River Water Investment Co.

12, Shenzhen Water (Group) Co.

13, Tianjin Chuangye Environmental Protection Co.

14, China Water Affairs Group Limited

15, Shenzhen Jinxinan Water Group Limited

16, Anhui Guozhen Environmental Protection and Energy Conservation Science and Technology Co.

17, Chengdu Xingrong Group Co.

1, Beijing Wanbangda Environmental Protection Technology Co.

2, Yangzhou Chengyu Environmental Engineering Ltd.

3, Beijing Sund Environmental Protection Group Co.

4, Beijing Bishuiyuan Science and Technology Co.

5, Veolia Water Engineering (Beijing) Co.

6, GE Water Treatment and Process Handling Co.

7, Shenzhen Jindalai Environmental Protection Co.

8, Beijing Meihua Ltd.

9, Beijing Construction Engineering Jinyuan Environmental Protection Development Co.

10, Wuhan Metropolitan Environmental Protection Engineering Technology Co.

11, Jiangsu Tianyu Environmental Protection Group Co.

12, Anhui Guozhen Environmental Protection and Energy Conservation Science and Technology Co.

13, Jiangsu Peng Harrier Environmental Protection Group Co. Ltd.

14, Shouchuang Aihua (Tianjin) Municipal Environmental Engineering Co.

15, Puhua Holdings Co.

16, China Science and Technology Environmental Protection Group Co.

17, DHW (Beijing) Environmental Engineering Co.

18, Standard Water Co.

19, Fujian New Continental Environmental Protection Technology Co. Ltd.

20, Zhejiang Europe and the United States Environmental Engineering Co.

21, Tongfang Co.

22, Zhejiang De'an New Technology Development Co.

23, Guangdong New Dayu Environmental Engineering Co.