Beijing Jingang Airport Construction Co., Ltd.
3 Beijing Blue Sky Construction Co., Ltd.
Beijing municipal construction group co., ltd
5 Beijing China Airport Construction Engineering Co., Ltd.
6 Fujian Bajian Construction Engineering Co., Ltd.
7 Gansu Province Mechanized Construction Engineering Co., Ltd.
8 Hunan Xingsha Construction Co., Ltd
10 Lanzhou Municipal Construction Group Co., Ltd.
1 1 Shanxi Construction Engineering (Group) Corporation
12 Shanxi machinery construction company
13. Shanghai Baosteel Metallurgical Construction Company
14. Shanghai Suzhou City Group Company
15. Shanghai di municipal engineering co., ltd.
16. Shanghai Tunnel Engineering Co., Ltd.
17. Shanghai Highway and Bridge Engineering Co., Ltd.
18 Hebei Construction Group Co., Ltd.
19 Sichuan Changtong Engineering Co., Ltd.
20 Sichuan Construction Mechanization Engineering Company
2 1 Northwest Civil Aviation Airport Construction Co., Ltd.
22. Xinjiang Kunlun Road Port Engineering Company
23. Yunnan Construction Engineering Fourth Construction Co., Ltd.
Yunnan Phosphating (Group) Engineering Construction Co., Ltd.
25 CCCC Fourth Engineering Co., Ltd.
26 Zhongnan Airport Construction Company
27 China Airlines South Mechanized Hainan Engineering Bureau
28 China Mozhouba Group Co., Ltd.
29. China Airport Construction Eighth Engineering Corps
30. China Airport Construction Second Engineering Corps
3 1 China Airport Construction Ninth Engineering Corps
32. China Airport Construction Tenth Engineering Corps
33. China Airport Construction Seventh Engineering Corps
34 China Railway 12th Bureau Group Fourth Engineering Co., Ltd. (excluding pavement)
35 China Railway Airport Construction Group Co., Ltd
36. The Second Hydropower Corps of the Chinese People's Armed Police Force
37. China Sixteenth Engineering Bureau of Water Resources and Hydropower Co., Ltd.
38. China Huaxi Enterprise Co., Ltd.
39 China Railway Second Bureau Mechanical Road Construction Engineering Co., Ltd.!
40 China Railway Fifth Engineering Group Mechanization Engineering Co., Ltd.
4 1 China Railway Construction 11th Bureau Group Co., Ltd.
42 China Railway 13th Bureau Group Fourth Engineering Co., Ltd.
43 China Railway 14th Bureau Group Second Engineering Co., Ltd.
44 China Railway 14th Bureau Group Third Engineering Co., Ltd.
45 China Railway 14th Bureau Group Fourth Engineering Co., Ltd.
46 China Railway 16th Bureau Sports Group Third Engineering Co., Ltd. (excluding pavement)
47. China Railway 17th Bureau Group Co., Ltd.
48. China Railway 19th Bureau Group Second Engineering Co., Ltd.
49 China Railway 20th Bureau Group Third Engineering Co., Ltd.
50 Western Airport Group Construction Engineering (Xi 'an) Co., Ltd.
5 1 China Railway 14th Bureau Group Tunnel Engineering Co., Ltd.