Façade worksPlumbing and sheet-metal workRemediation of hazardous substances / Asbestos abatementRemediation worksWaste disposalWindowsWooden construction
Building technology/ building services (building automation)HeatingPlumbing and sheet-metal workRemediation worksSanitarySheet-metal worksSolar panelsVentilation
Building technology/ building services (building automation)Façade worksGas installationHeatingPlumbing and sheet-metal workSanitarySolar panelsVentilation