| ★ |
Grade 1 construction certificate for building construction |
| ★ |
Specialized Grade 1 construction certificate for ancient architectural gardening engineering construction |
| ★ |
Specialized Grade 1 construction certificate for electromechanical device installation construction |
| ★ |
Specialized Grade 1 construction certificate for architectural decoration installation construction |
| ★ |
Specialized Grade 2 construction certificate for groundwork and foundation work construction |
| ★ |
Specialized Grade 2 construction certificate for municipal public utility work construction |
| ★ |
The third class of specialty fire project construction contract |
| ★ |
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