How many domestic enterprises are engaged in the first-level contracting of tunnel construction? Where did you find it?

First, the port and waterway engineering construction general contracting enterprise qualification

1 general contracting fee for port and waterway engineering construction of China Harbor Construction (Group) Corporation.

2. Special grade for general contracting of waterway engineering construction of China-Hong Kong Third Waterway Engineering Bureau.

3. First-class general contracting of waterway engineering of China-Hong Kong First Waterway Engineering Bureau.

4. First-class general contracting of waterway engineering construction of China-Hong Kong Second Waterway Engineering Bureau

5. First-class general contracting of waterway engineering construction of the Fourth Harbor Engineering Bureau of China and Hong Kong.

6 Shanghai Waterway Bureau Port and Waterway Engineering Construction General Contracting Level I

7 Tianjin Waterway Bureau Port and Waterway Engineering Construction General Contracting Level I

8 Guangzhou Waterway Bureau Port and Waterway Engineering Construction General Contracting Level I

9 Yangtze River Waterway Bureau Waterway Engineering Construction General Contracting Level I

10 China No.1 Engineering Company-Level I General Contracting of the First Waterway Project in Hong Kong

1 1 China Port and Shipping No.1 Bureau Waterway Project General Contracting Level I.

12 first-class general contracting of port and shipping engineering of the third engineering company of the first channel project between China and Hong Kong.

13 First-class General Contracting of Port and Navigation Engineering of the Fourth Engineering Company of China-Hong Kong First Waterway Project

14 First-class General Contracting of Port and Navigation Works of the Fifth Engineering Company of China-Hong Kong First Waterway Project

15 first-class general contracting of port and shipping engineering construction of the second engineering company of China Aviation Administration.

16 Shanghai port engineering co., ltd. Level I general contracting of waterway engineering construction.

17 Guangdong hangsheng engineering co., ltd. Grade I general contracting of waterway engineering construction.

18 first-class general contracting of water transport project of Shandong Zhugang Company

19 First-class General Contracting of Waterway Engineering of China Shipbuilding Engineering Construction Bureau

20 Guangdong Jindonghai Group Co., Ltd. Port and Waterway Engineering Construction General Contracting Level I

2 1 Second-level General Contracting of Port and Shipping Engineering of Nanjing Port Engineering Company

22 Qingdao Port Authority Port Engineering Company Waterway Engineering General Contracting Level II

23 Yantai Port Engineering Company Waterway Engineering General Contracting Level II

24 Lianyungang Port Engineering Co., Ltd. Waterway Engineering Construction General Contracting Level II

25 General Contracting Level II of Port and Waterway Engineering Construction Department of the Sixth Engineering Construction Department of PLA Navy

26 General Contracting Level II of Port and Waterway Engineering Construction Department of the Seventh Engineering Construction Department of PLA Navy

27. China Water Conservancy and Hydropower Twelfth Engineering Bureau Waterway Engineering Construction General Contracting Level II

28 Second-level General Contracting of Waterway Engineering of Lushun Marine Bureau

29 China Water Conservancy and Hydropower Minjiang Engineering Bureau Waterway Engineering Construction General Contracting Level II

Two, the port and coastal engineering professional contracting enterprise qualification

30 Guangzhou Maritime Rescue and Salvage Bureau's professional contracting for port and coastal engineering is Grade I.

3 1 First-class contracting of port and coastal engineering specialty of East China Engineering Construction Bureau of Navy.

First-class contract of waterway engineering specialty

32 Qingdao Coastal Defence and Port Construction Project Beihai Corps Port and Coastal Engineering Professional Contracting Level I

First-class contract of waterway engineering specialty

33 (Zhanjiang) Southern Engineering Construction Bureau's professional contracting for port and coastal engineering is Grade I.

First-class contract of waterway engineering specialty

34 Bohai Oil Navigation Construction Engineering Co., Ltd. Port and Coastal Engineering Professional Contracting Grade I

35. China Aquatic Guangzhou Port Construction Engineering Co., Ltd. specializes in the first-class contracting of port and coastal projects.

36 Shanghai Sanhang Pentium Construction Engineering Co., Ltd. Port and Coastal Engineering Professional Contracting Level I

37 Guangdong-Zhaogang Harbor Engineering Co., Ltd. is a professional contractor of port and coastal engineering.

First-class professional contracting of port loading and unloading equipment installation engineering

Three-level contracting of water transport engineering specialty

38 China Railway Bridge Bureau Group Co., Ltd. Port and Coastal Engineering Professional Contracting Grade II

39. China No.1 Engineering Company-Hong Kong No.4 Waterway Engineering Co., Ltd. contracted the second level of port and coastal engineering specialty.

40 Shanghai Communications Construction General Contracting Company specialized in port and coastal engineering contracting Grade II

Secondary contracting of waterway engineering specialty

4 1 Yantai Bai Tong Construction Engineering Co., Ltd. is a professional contractor of port and coastal engineering with Grade III.

42 Zhanjiang Port Authority Construction and Installation Company specialized in port and coastal engineering contracting Grade III

43 Yichang Port Authority Construction and Installation Engineering Company specialized in port and coastal engineering contracting Grade III

44 Anqing Waterway Engineering Company specialized in port and coastal engineering contracting level 3.

45 Wuhan Port Construction and Installation Engineering Co., Ltd. specialized in port and coastal engineering contracting Grade III

46 Tianjin Ji Shen Engineering Co., Ltd. Port and Coastal Engineering Professional Contracting Grade III

Three, water transport engineering professional contracting enterprise qualification

47 China-Hong Kong Dredging Co., Ltd. Waterway Engineering Professional Contracting Class I

48 Tianjin Waterway Bureau No.1 Dredging Company's professional contract for waterway engineering is Grade I.

49 Yangtze River Wuhan Waterway Engineering Bureau Waterway Engineering Professional Contracting Level 1

50 Yangtze River Nanjing Waterway Engineering Bureau Waterway Engineering Professional Contracting Level 1

5 1 First-class professional contract of waterway engineering of Chongqing Waterway Engineering Bureau of Yangtze River.

Secondary contracting for port and coastal engineering specialty

52 Guangdong China Shipping Engineering Construction General Bureau contracted the first-class waterway engineering specialty.

First-class contracting of port and coastal engineering specialty

53 Yangtze River Yichang Waterway Engineering Bureau Waterway Engineering Professional Contracting Grade II

54 Shantou Port Engineering Co., Ltd. specialized in water transport engineering contracting Grade II.

Three-level contracting of port and coastal engineering specialty

Four, port loading and unloading equipment installation engineering professional contracting enterprise qualification

Shanghai Sanhang Xing 'anji Construction Engineering Co., Ltd. specializes in contracting port loading and unloading equipment installation projects.

Tianjin Yihang Installation Engineering Co., Ltd. is a professional contractor of port loading and unloading equipment installation project.

57 China Machinery Industry Construction Corporation's professional contracting for port loading and unloading equipment installation project is Grade I.

58 Wuchuan Heavy Industry Co., Ltd. Port Loading and Unloading Equipment Installation Engineering Professional Contracting Level 1

Tianjin Shipping Engineering Co., Ltd. of China-Hong Kong Group specializes in contracting port loading and unloading equipment installation projects.

Five, navigation construction engineering professional contracting enterprise qualification

60 Jiangsu Communication Engineering Corporation maritime construction engineering professional contracting level 1.

6 1 Huaiyin Water Conservancy Construction Group Co., Ltd. is a professional contractor of navigation construction engineering.

62 Yancheng Water Conservancy Construction Engineering Agency belongs to the navigation construction engineering professional contracting level 1.

63. China Gezhouba Water Conservancy and Hydropower Engineering Group Co., Ltd. is a professional contractor of navigation construction engineering.

Six, navigation equipment installation engineering professional contracting enterprise qualification

64 China Water Conservancy and Hydropower Tenth Engineering Bureau navigation equipment installation engineering professional contracting level 2.

Seven, water traffic control engineering professional contracting enterprise qualification

65 Beijing Xing Xing Communication Engineering Technology Co., Ltd. Water Traffic Control Engineering Professional Contracting Qualification

66 Changhang Xinda Technology Development Company (Wuhan) Water Traffic Control Engineering Professional Contracting Qualification

67 Guangzhou Zhonghai Telecom Co., Ltd. Water Traffic Control Engineering Professional Contracting Qualification