1. Baicheng Cecilia Yip Co., Ltd.

2. Nanjing Jiangbiao (Liaoning Haicheng has a branch)

3. Nanjing China Construction Eighth Bureau

4. Ma Shuang Kong Feng, Wuxi

5. Inner Mongolia Honggang Machinery

6 Baotou North Venture Co., Ltd.

7. Jilin Mingmen

8. Tongyu Dongbao

9. Qingdao Wu Xiao (Heilongjiang Suihua has a branch)

10. China Oil and Gas Seventh Construction Company

1 1. Qingdao Sizhou

12. Qingdao Pingcheng Steel Structure Co., Ltd.

13. Heilongjiang north valve industry co., ltd.

14. Hebei ningqiang light source co., ltd.

15. Harbin Hong Guang boiler

16. Hebei Xuanhua Metallurgy

17. Hebei Chengde Conveyor Group Co., Ltd.

18. Zhangjiakou Qian Shan steel structure co., ltd.

19. Zhangjiakou boiler plant

20. Yantai Huoyanshan Boiler Factory

2 1. China No.3 Metallurgical Construction Company (Anshan)

22. Wuzhong Instrument Co., Ltd.

23. Ningxia Tianjing Wind Power

24 Gansu Yao Ke Wind Power Co., Ltd.

25. Gansu 471 Boiler Factory

26. Nantong Lianlian

27. Yin Guang of Ningxia

28. Shanghai Taisheng (with branches in Chifeng and Qingdao)

29 Liaoning Yingkou Yannan Petrochemical Equipment Co., Ltd.