Building plumbingCarpentry worksCrane work and rentalElectrical installationETICSInsulationLightning protectionNatural stone worksRemediation of hazardous substances / Asbestos abatementRoof sealRoofing worksScaffoldingSolar panels
Air conditioningBuilding technology/ building services (building automation)Electrical installationHeatingRefrigerationRenewable energiesSanitarySolar panels