 | ROLVSØY RØR AS | 935152445 | FREDRIKSTAD |
| ROLVUNG OG BRØNDSTED ARKITEKTER AS | 927167492 | TRONDHEIM |
| ROMARHEIM ENTREPRENØR AS | 997050789 | ALVER |
| ROMERIKE ANLEGGSDRIFT AS | 964460469 | ULLENSAKER |
| ROMERIKE BAD AS | 999198570 | ULLENSAKER |
| ROMERIKE ELEKTRO AS | 976494881 | ULLENSAKER |
| ROMERIKE GEOTEKNIKK AS | 926732617 | LILLESTRØM |
| ROMERIKE GRAVING OG TRANSPORT V/PER-CHRISTIAN AAS | 969098865 | ULLENSAKER |
| ROMERIKE & HADELAND BLÅSEISOLERING AS | 936175155 | EIDSVOLL |
| ROMERIKE HUS AS | 891141092 | RÆLINGEN |
| ROMERIKE KLIMASERVICE AS | 996025209 | EIDSVOLL |
| ROMERIKE MASKIN AS | 985479569 | NES |
| ROMERIKE OPPMÅLING AS | 979376499 | LILLESTRØM |
| ROMERIKE PROFILTEKNIKK AS | 971163364 | LILLESTRØM |
| ROMERIKE RØRLEGGERBEDRIFT AS | 990122792 | ULLENSAKER |
| ROMERIKE TAK OG FASADE AS | 934186087 | GJERDRUM |
| ROMERIKE TAK OG MEMBRAN AS | 931710346 | GJERDRUM |
| ROMRISS AS | 921283555 | BERGEN |
| ROMSDAL MASKIN AS | 991897321 | MOLDE |
| ROMSLY AS | 930687391 | AURSKOG-HØLAND |
| ROM SPRINKLER AS | 916567367 | PORSGRUNN |
| RØNAAS ENTREPRENØR AS | 920976077 | NES |
| RONALD ØDEGÅRD AS | 814580822 | KONGSBERG |
| RONDANE ENTREPRENØR AS | 988850306 | SØR-FRON |
| RONDANE OPPMÅLING AS | 922256640 | SEL |
| RONGVE BYGG | 981889770 | VOSS |
| RONGVE OG FYLLING ELEKTRO AS | 994034529 | ÅLESUND |
| RØNNING ANLEGG AS | 889255722 | VESTBY |
| RØNNING ANLEGGSTJENESTER | 970386858 | ORKLAND |
| RØNNING ELEKTRO AS | 915581714 | STAVANGER |
| RØNNINGEN BYGGTJENESTER AS | 925773840 | NORDRE LAND |
| RØNNINGENE AS | 921558368 | HOLMESTRAND |
| RØNNINGEN KJELL VICTOR | 970300600 | ELVERUM |
| RØNNINGEN MASKIN AS | 988132020 | NES |
| RØNNING ENTREPRENØR AS | 992046996 | ASKER |
| RØNNING INDRELID AS | 956990726 | ØVRE EIKER |
| RONNY MOLDESTAD | 969938839 | KARMØY |
| RONNY'S MASKIN AS | 912212041 | HOL |
| RONNY TENNFJORD AS | 927892235 | ÅLESUND |
| RØN VVS AS | 979517130 | VESTRE SLIDRE |
| RØR 24 AS | 920851622 | ÅLESUND |
| RØR COMFORT AS | 974382687 | STAVANGER |
| RØRCOMPANIET AS | 989707833 | SARPSBORG |
| RØRCONSULT AS | 979645236 | OSLO |
| RØREKSPERT1 AS | 918336303 | TRONDHEIM |
| RØR EKSPERTEN AS | 929229681 | VENNESLA |
| RØRENTREPRENØR DAN BERG AS | 924664223 | ALTA |
| RØRENTREPRENØREN AS | 926708023 | OSLO |
| RØRFAG TROMSØ AS | 925076392 | TROMSØ |
| RØRFIX AS | 813034492 | NORDRE FOLLO |
| RØRFUNN AS | 974437589 | TRONDHEIM |
| RØR GRUPPEN AS | 924759593 | OSLO |
| RØRGUTTA SKIEN AS | 817010482 | SKIEN |
| RØRHEIM MASKIN AS | 961374235 | STAVANGER |
| RØRHJELP AS | 996740323 | NORDRE FOLLO |
| RØRHJELPEN AS | 915789978 | SARPSBORG |
| RØRINOR AS | 999600034 | TROMSØ |
| RØRINSTAL AS | 936392563 | EIDSVOLL |
| RØR I SØR AS | 879688302 | KRISTIANSAND |
| RØRKOMPANIET AS | 981521439 | BERGEN |
| RØRKOMPANIET AS | 963328389 | ASKER |
| RØRKOMPANIET EFT. AS | 987132574 | MALVIK |
| RØR-KONTAKTEN AS | 921956010 | NORDRE FOLLO |
| RØRKUNNSKAP AS | 927246724 | LILLESTRØM |
| RØRLEGEN VVS AS | 926741853 | BERGEN |
| RØRLEGGER 123 AS | 927187086 | LILLESTRØM |
| RØRLEGGER 1 AS | 984072368 | TRONDHEIM |
| RØRLEGGER 1 KRISTIANSUND AS | 990514232 | KRISTIANSUND |
| RØRLEGGER 1 MOLDE AS | 812573942 | MOLDE |
| RØRLEGGER 1 OSLO AS | 996313212 | OSLO |
| RØRLEGGER 1 SUNNDALSRØR AS | 982156033 | SUNNDAL |
| RØRLEGGER 24 - 7 AS | 996923568 | OSLO |
| RØRLEGGER365 AS | 925947180 | ÅLESUND |
| RØRLEGGER ALF LARSEN AS | 981446313 | HAUGESUND |
| RØRLEGGER ANDREAS LØPPEN | 986982043 | FJORD |
| RØRLEGGERANE AS | 928010031 | HAUGESUND |
| RØRLEGGER ASGEIR HOLE AS | 927989751 | STRANDA |
| RØRLEGGER ASLAK SELTVEIT AS | 937327250 | FYRESDAL |
| RØRLEGGER BERGAN AS | 928643026 | TINN |
| RØRLEGGER BERGEN VVS AS | 916963602 | BERGEN |
| RØRLEGGER BERNTSEN AS | 960515978 | HAMMERFEST |
| RØRLEGGER BRAGER AS | 885158102 | ØYSTRE SLIDRE |
| RØRLEGGER DARRA AS | 931463993 | OSLO |
| RØRLEGGER DIESEN AS | 829568292 | NES |
| RØRLEGGER EINAR PETTERSEN AS | 992138521 | KRISTIANSAND |
| RØRLEGGEREKSPRESSEN AS | 913947606 | PORSGRUNN |
| RØRLEGGER ELIASSEN AS | 997251458 | RÅDE |
| RØRLEGGEREN DIN AS | 933336867 | BODØ |
| RØRLEGGER ERIK JENSEN Innehaver Marianne Jensen | 881419092 | SANDEFJORD |
| RØRLEGGER EVENSEN AS | 927112248 | ØKSNES |
| RØRLEGGERFIRMA HANØY AS | 986892729 | AUSTEVOLL |
| RØRLEGGERFIRMA K HORGHAGEN AS | 948804735 | SKAUN |
| RØRLEGGERFIRMA KJELGAARD AS | 987575352 | ENEBAKK |
| RØRLEGGERFIRMA LIEN & CO AS | 977054664 | VESTRE TOTEN |
| RØRLEGGERFIRMA SIGURD LIMA AS | 933573834 | GJESDAL |
| RØRLEGGERFIRMA STØLSVIK AS | 957854222 | STAVANGER |
| RØRLEGGERFIRMA VVS-PROFFEN AS | 981580915 | NARVIK |
| RØRLEGGER FRAMNES AS | 933378020 | NORDRE LAND |
| RØRLEGGER FRIGSTAD AS | 913026365 | KRISTIANSAND |
| RØRLEGGER G. ANDERSEN AS | 993020095 | SARPSBORG |