Crane work and rentalFaçade worksLightning protectionRemediation of hazardous substances / Asbestos abatementRoof sealRoofing worksScaffoldingSheet-metal worksWindows
Building technology/ building services (building automation)Doors and gatesElectrical installationFaçade worksFire protectionHeatingInterior constructionJoinery worksLocksmith worksMetal constructionPainting worksSanitaryWindowsWooden construction