Air conditioningBuilding technology/ building services (building automation)Gas installationHeatingRefrigerationRemediation worksRenewable energiesSanitarySauna constructionSolar panelsTiles and panelsVentilation
Canal constructionEarthworksGeneral contractorsIndustrial construction and hall buildingRemediation worksRoad constructionShellStructural engineeringTurn-key constructionUnderground construction