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

2. General Contracting for Construction of Grade II to Grade I Qualification

3. Class Two Professional Qualification for Electronic and Intelligent Engineering General Contracting

4. Class 2 General Contracting Qualification for Electric Power Engineering Construction

5. Class Two Fire Protection Facilities Professional Contracting Qualification

6. General Contracting for Municipal Public Works Engineering - Second Grade

7. Waterproofing, anticorrosion, and thermal insulation professional contracting qualification Level II

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

9. China Cleaning Industry Standardization Association Qualification Certificate for Personnel

10. Grade II Qualification for Professional Contracting of Foundation Engineering

11. China Tendering and Bidding Website Credit Certificate Inquiry

12. Class II Professional Contracting Qualification for Building Façade Engineering

13. Class 2 Civil Engineering General Contracting Qualification for Water Conservancy and Hydropower Projects

14. Construction labor, no classification by grade

15. Class II Qualification for Professional Contracting in Building Decoration and Decoration Engineering

16. Class 2 Professional Qualification for General Contracting of Hoisting Equipment Installation Engineering

17. Furniture CQTA Quality Verification Certificate

18. Communication Engineering General Contracting Qualification Level II

19. Class II General Contracting Qualification for Highway Engineering Construction

20. Class 2 General Contracting Qualification for Electrical and Mechanical Engineering Construction