Building technology/ building services (building automation)CleaningElectrical installationGas installationHeatingSanitaryStoves and fireplacesVentilation
Cable layingCleaningCommunication technologyData network worksElectrical installationIndustrial construction and hall buildingLighting systemsPhotovoltaicsRenewable energiesSolar panels
Building technology/ building services (building automation)CleaningGas installationHeatingPlant engineeringRefrigerationRenewable energiesSanitarySolar panelsVentilation