Category general contractor
1.2 Small buildings
1.3 Buildings of all types
1.4 Roads and pipelines
1.6 Submerged civil engineering works
Category specialized contractor
2.2 Non-drilled catchment works
2.3 Groundwater pumping systems
2.4 Autonomous sanitation systems
2.5 Excavation and Earthwork
8.0 Doors and windows
11.1 Industrial Pressure Piping
11.2 Special equipment and products
15.2 Natural Gas Burner Systems
15.3 Oil Burner Systems
15.4 Hot water and steam heating systems
15.5 Plumbing