Building technology/ building services (building automation)Cable layingCommunication technologyData network worksElectrical installationIndustrial construction and hall buildingLighting systemsLightning protectionPhotovoltaicsPlant engineeringRenewable energiesSafety technologySolar panels
Air conditioningBuilding technology/ building services (building automation)Electrical installationHeatingPlant engineeringSanitarySolar panelsVentilation
Assembly worksCleaningIndustrial construction and hall buildingPipeline constructionPlant engineeringRemediation worksScaffoldingSteel constructionStructural engineeringUnderground construction