English
Contractor Registration
| Department of Highway | Class/Type | ||
| • Road Construction Contractor | 1 | ||
| • Bridge and Pipe Construction Contractor | 1 | ||
| Department of Irrigation | |||
| • Irrigation Work Contractor | 1 | ||
| Department of Rural Highway | |||
| • Road Construction Contractor | Special | ||
| • Bridge Construction Contractor | Special | ||
| Bangkok Metropolitan Administration | |||
| • Road Construction Contractor | 1 | ||
| • Bridge Construction Contractor | 4 | ||
| The Metropolitan Waterworks Authority | 2 | ||
| Provincial Water Authority | 2 | ||
| National Housing Authority | |||
| • Building work | 1 | ||
| • Civil Work Construction Contractor | 1 | ||
| • Infrastructure, Renovation Work | 1 | ||
| Port Authority of Thailand | |||
| • Road Construction Contractor | 1 | ||
| • Building work | 1 | ||
