BricklayingConstruction materialsDemolition worksDredgingEarthworksIndustrial construction and hall buildingRemediation worksShellStable buildingWaste disposal
Carpentry worksCrane work and rentalDry constructionETICSInsulationInterior constructionRemediation worksRoof sealRoofing worksWindowsWooden construction
Building technology/ building services (building automation)Gas installationHeatingRemediation worksRenewable energiesSanitarySheet-metal worksSolar panelsStoves and fireplacesVentilation