Façade worksPlumbing and sheet-metal workRemediation of hazardous substances / Asbestos abatementRemediation worksWaste disposalWindowsWooden construction
Air conditioningElectrical installationEnvironmental engineeringGas installationHeatingPhotovoltaicsPlumbing and sheet-metal workSanitarySauna constructionStoves and fireplaces
Building technology/ building services (building automation)CleaningGas installationHeatingPlumbing and sheet-metal workRemediation worksSanitarySolar panelsVentilation