煤气和石油—开采

LADE TRAFIKKSENTER STRAND TORBJ AS

DET NORSKE OLJESELSKAP ASA

PIER OFFSHORE MANAGEMENT SERVICES AS

HEIMDAL RØR AS

VENTILASJON OG INNEKLIMA AS

GOLAR NOR OFFSHORE AS

TUNG INVEST AS

B SKOTVOLL AS

S MOE AS

MILJØVENTILASJON AS

HORGMO RØRKOMPANI AS

NORTH OFFSHORE SUPPLY AS

TRONDHEIM LUFTTEKNIKK ING FIRMA AS

KYRKSÆTERØRA INDUSTRI RØR AS

SOLLIGÅRD AS

MAXIRØR AS

RØRLEGGERFIRMA K HORGHAGEN AS

FOSEN VENTILASJON AS

COMFORT TEKNIKK AS

SVERRE PETTERSEN AS

OPPDAL VVS A/S

SKOGN VVS AS

ENGSTAD & TARALDSEN RØR AS

AIRCOMFORT TRØNDELAG AS

OLE SIVERTSEN AS

TRONDSETH O RØR OG MØBELFOR AS

LØHRE VVS AS

EINAR HAUGSNES AS

TRØNDERRØR AS

AS RØRLEGGER