1 China State Construction Engineering Corporation
2 China Railway Construction Corporation
3. Pacific Construction Group Limited
4 Offshore Oil Engineering Co., Ltd
5 Zhejiang Electric Power Construction Company
China No.3 Metallurgical Construction Company
7 China Railway Engineering Corporation
8 Angang Group Construction Company
9 Jiangsu Nantong Erjian Group Co., Ltd.
10 Jiangsu Nantong Sanjian Group Co., Ltd.
1 1 Zhongtian Construction Group Co., Ltd.
12 China water conservancy and hydropower construction group company
13 China Petroleum Engineering Construction (Group) Company
14 Shanghai Beigang Construction Development Co., Ltd.
15 Longyuan Construction Group Co., Ltd.
16 Yunnan Luqiao co., ltd
17 Shanghai huisheng chemical co., ltd
18 Guangdong Hanjiang Construction and Installation Engineering Company
19 Zhejiang Zhongcheng Construction Engineering Group Co., Ltd.
20 China Railway Bridge Bureau Group Fifth Engineering Co., Ltd.
2 1 China Harbour Dredging Co., Ltd.
22 Wudi Haichuan Installation Engineering Co., Ltd.
23 Dalian Sanchuan Construction Co., Ltd.
24. China Railway Bridge Bureau Group Seventh Engineering Co., Ltd.
25. Jinchuan Group Construction Co., Ltd.
26 China Harbor Construction (Group) Corporation
27 Beijing Changping Power Supply Engineering Installation Company
28 Jiangsu Hongsheng Construction Engineering Group Co., Ltd.
29 Beijing Urban Construction Group Co., Ltd.
30 Beijing Hanjian Group Co., Ltd.
3 1 Zhejiang Baoye Construction Group Co., Ltd.
32 Guangzhou Southern Electric Power Construction Group Co., Ltd.
33 Wuxi Xineng Industrial Company
34 Nantong Sijian Group Co., Ltd
35 Zhejiang Zhongfu Construction Group Co., Ltd.
36 Changzhou Suyuan Group Electric Power Company Limited
37 Zhejiang Judas Industrial Co., Ltd.
38 Nanjing Suyi Industrial Co., Ltd.
39 Jiangsu Suzhong Construction Group Co., Ltd.
40 Shanxi Huatong Luqiao Group Co., Ltd.
4 1 Dandong Rilin Construction Group Co., Ltd.
4.2 billion yang group co., ltd
43 Guangxi Electric Power Development Co., Ltd
44 Beijing Shuntiantong Construction Engineering Co., Ltd.
45 Jiangsu Huajian Construction Co., Ltd.
Shanghai tunnel engineering co., ltd.
47 China Railway 13th Bureau Group Co., Ltd.
48 China-Hong Kong Third Harbor Engineering Bureau
49 Tianjin Waterway Bureau
50 Zhejiang Zhongshe Construction Engineering Group Co., Ltd.