Building technology/ building services (building automation)CleaningGas installationHeatingRemediation worksSanitarySolar panelsStoves and fireplacesVentilation
Carpentry worksCrane work and rentalDoors and gatesDry constructionFaçade worksJoinery worksRemediation worksRoof sealRoofing worksWindowsWooden construction
Carpentry worksDry constructionFaçade worksIndustrial construction and hall buildingPlumbing and sheet-metal workRemediation of hazardous substances / Asbestos abatementRemediation worksScaffoldingWooden construction