Carpentry worksCrane work and rentalDoors and gatesFencingFlooring worksInsulation technologyInterior constructionLightning protectionMetal constructionParquetryRemediation of hazardous substances / Asbestos abatementRemediation worksRoof sealRoofing worksSolar panelsStoves and fireplacesTiles and panelsWindows
Building technology/ building services (building automation)Cable layingCommunication technologyData network worksElectrical installationIndustrial construction and hall buildingLighting systemsLightning protectionPhotovoltaicsPlant engineeringRenewable energiesSafety technologySolar panels