1. General Contracting Grade II to Grade I Qualification for Municipal Engineering Construction

2. General Contracting Grade II to Grade I Qualification for Construction Engineering Projects

3. Electronic and Intelligent Engineering Professional Contracting Qualification Level II

4. Class Two General Contracting Qualification for Electric Power Engineering Construction

5. Fire Protection Engineering Professional Contracting Qualification Level II

6. Municipal Public Works General Contracting Grade II

7. Waterproofing, Corrosion Prevention, and Thermal Insulation Professional Contracting Qualification Level Two

8. General Contracting Qualification for Construction of Civil Engineering Projects - Grade II

9. China Clean Industry Standardization Association Qualification Certificate Personnel Certificate

10. Class II Professional Qualification for Foundation Engineering General Contracting

11. China Tendering and Bidding Website Credit Certificate Inquiry

12. Class Two Professional Contracting Qualification for Architectural Façade Engineering

13. Class 2 General Contracting Qualification for Water Conservancy and Hydropower Construction

14. Construction labor is not categorized by grades.

15. Class II Qualification for Professional Contracting in Architectural Decoration and Construction

16. Class 2 Qualification for Professional Contracting in the Installation of Hoisting Equipment

17. Furniture CQTA Quality Verification Certificate

18. Class Two General Contracting Qualification for Telecommunication Engineering Construction

19. Class Two General Contracting Qualification for Highway Engineering Construction

20. Class Two General Contracting Qualification for Mechanical and Electrical Engineering Construction