الغاز والبترول، حفر واستخراج

DET NORSKE OLJESELSKAP ASA

LADE TRAFIKKSENTER STRAND TORBJ AS

SVERRE PETTERSEN AS

TEEKAY PETROJARL PRODUCTION AS

JOHNSEN VVS AS

ØKOVENT AS

SOLLIGÅRD AS

HADAK AS

BAKCO AS

ENGSTAD & TARALDSEN RØR AS

COMFORT TEKNIKK AS

FOSEN VENTILASJON AS

COMFORTBUTIKKEN RØRSENTERET AS

AIRCOMFORT TRØNDELAG AS

INTERNATIONAL PIPE SERVICE AS

ORKDAL VARME OG SANITÆR AS

LØHRE VVS AS

OLE SIVERTSEN AS

EINAR HAUGSNES AS

BAKKEN VVS AS

TRONDSETH O RØR OG MØBELFOR AS

AS RØRLEGGER

TRØNDERRØR AS

FALKSENTERET GULV OG MALERSERVICE AS

MAXIRØR AS

HARALD LARSEN RØRLEGGER AS

PETROJARL VARG AS

BADHUSET AS

MESTERRØR AS

RØR PÅ RØROS AS