| | Prequalified Contractors | Contracts Prequalified |
| 1. | Liaoning Communication Construction Group Co. Ltd. | A04, A05 |
| 2. | Shanghai Highway & Engineering | A03, A10 |
| 3. | Shaoyang Roads & Bridges Construction Ltd. | A04, A09 |
| 4. | East Highway & Bridge Construction Corporation of Shandong | A01, A06, A09 |
| 5. | Shanghai Jingtong Construction (Group) Co., Ltd. | A03, A06 |
| 6. | China Railway Sixth Group co. Ltd. | A04, A05 |
| 7. | Shanxi Yucheng Road and Bridge Co. Ltd. | A01, A02, A11 |
| 8. | Inner Mongolia Highway Engineering Bureau | A04, A09 |
| 9. | Henyang Road and Bridge Construction Co. Ltd. | A04, A09 |
| 10. | No. 2 Engineering co. ltd. of China Railway 11 | A06, A011 |
| 11. | The First Engineering Co. of China Railway first Group Co. Ltd. | A03, A09 |
| 12. | China Railway First Group Co., Ltd. | A10, A11 |
| 13. | Hennan Puyang Huatong Highway Bridge Construction Group co. Ltd. | A05, A06 |
| 14. | Shandong Luqiao Group Co. Ltd. | A02, A10 |
| 15. | China Railway 24 Bureau Group Co. Ltd. | A04, A06, A09 |
| 16. | China Railway 24th Bureau Nan Chang Railway Engineering Co., Ltd. | A03, A10, A11 |
| 17. | China Railway 12th Bureau Group Co. Ltd. | A01-A06, A09-A11 |
| 18. | The Third Engineering Co. Ltd. of the CCCC First Highway Engineering Bureau | A02 |
| 19. | China Railway No. 5 Engineering Group Co. Ltd. | A05, A09 |
| 20. | Taiyuan Road and Bridge Construction Co. Ltd. | A04, A05 |
| 21. | China Railway No. 8 Engineering Group Co. Ltd. | A10, A11 |
| 22. | The Fourth Engineering Co. Ltd. of CCCC Second Highway Engineering Bureau | A01, A02, A10 |
| 23. | Louyang Road and Bridge Construction Group Co. Ltd. | A01, A02 |
| 24. | Henan Road & Bridge Construction Group Co., Ltd. | A09, A10, A11 |
| 25. | Anhui Communication Construction Co., Ltd | A04, A09 |
| 26. | CCCC-SHB Sixth Engineering Co., Ltd. | A04, A06, A11 |
| 27. | Xinjiang Beixin Road & Bridge Construction Co. Ltd. | A09, A10 |
| 28. | China Railway 15 Bureau Group No. 1 Engineering Co., Ltd. | A03, A05 |
| 29. | Nuclear Industry south China Construction Engineering Group Co. Ltd. | A03, A06 |
| 30. | The Sixth Engineering Company of the First Highway Engineering Bureau of China Communications Construction Company Ltd. |
A03, A06 |
| 31. | China Traffic Corporate 1, Xiamen Engineering Sub-Co. Ltd. | A03, A05, A06 |
| 32. | Xinjiang Beifang Mecahnical Highway Construction Division | A03, A05, A06 |
| 33. | Xinjiang Road & Bridge Construction Company | A03, A05, A06 |