Building plumbingCrane work and rentalDry constructionInsulationPlumbing workRemediation of hazardous substances / Asbestos abatementRemediation worksRoof sealRoofing worksSealing worksWooden construction
Air conditioningBuilding technology/ building services (building automation)CleaningDewatering worksGas installationHeatingInsulationRefrigerationRemediation worksRenewable energiesSanitarySolar panelsStoves and fireplaces