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| MASKINENTREPRENØR HERBJØRN NILSSEN AS | 979710968 | TROMSØ |
| MASKINENTREPRENØR JIMMY NORE & SØNN AS | 984231512 | KINN |
| MASKINENTREPRENØR JOSTEIN SUNDE AS | 932251442 | SUNNFJORD |
| MASKINENTREPRENØR KARSTEN MIKALSEN AS | 997091558 | FREDRIKSTAD |
| MASKINENTREPRENØR KNUT ROLANDSEN AS | 984283814 | RØST |
| MASKINENTREPRENØR KRISTIAN KRISTIANSEN AS | 982585058 | NARVIK |
| Maskinentreprenør Lobben & Skinstad A/S | 945856335 | ØVRE EIKER |
| MASKINENTREPRENØR MONAN AS | 922960690 | KRISTIANSAND |
| MASKINENTREPRENØR PER OTTO TANGEN AS | 990028567 | RINGERIKE |
| MASKIN ENTREPRENØR ROGER NÆRUM AS | 889568232 | SKIEN |
| MASKINENTREPRENØR RUNE HORVE | 992498218 | KRISTIANSAND |
| MASKINENTREPRENØR S. HAMMERSETH | 969410737 | KINN |
| MASKINENTREPRENØR SØLVE BOGEN | 914324637 | ØVRE EIKER |
| MASKINENTREPRENØR STIAN A. OLSEN AS | 918488588 | NANNESTAD |
| MASKINENTREPRENØR STIG KRISTIANSEN AS | 941835651 | TROMSØ |
| MASKINENTREPRENØR TOR GABRIELSEN AS | 982389836 | TROMSØ |
| MASKINENTREPRENØR TORMOD SEVERINSEN AS | 911987694 | TROMSØ |
| MASKINENTREPRENØR TRYGVE AASEN AS | 929052137 | SUNNFJORD |
| MASKINFIRMA ÅGE SIMONSEN & SØNN AS | 986550224 | ARENDAL |
| MASKINKRAFT AS | 977485576 | RINGSAKER |
| MASKIN OG UTEMILJØ AS | 987902817 | INDRE ØSTFOLD |
| MASKINSERVICE Arne Jørgen Bøhnsdalen | 980649121 | KONGSVINGER |
| MASKINSTYRING AS | 919720441 | HAMAR |
| MASKINTJENESTER AS | 996787028 | SKIEN |
| MASONITE BEAMS AS | 925357065 | RANA |
| MASSETRANSPORT AS | 982951720 | TRONDHEIM |
| MASTERBAD AS | 927209330 | OSLO |
| MASTER SEALING AS | 925353868 | VERDAL |
| MATEC ØST AS | 998755255 | GRUE |
| MA TEK AS | 879582512 | SØR-VARANGER |
| MATHIASSEN BYGGSERVICE AS | 927502216 | ASKØY |
| MATHIASSEN VENTILASJON- BLIKKENSLAGER AS | 989842579 | SENJA |
| MATHISEN AS | 951648736 | RINGSAKER |
| MATHISEN BYGGRÅDGIVING | 991784691 | LARVIK |
| MATHISEN VVS AS | 911825120 | MOLDE |
| MATS HUS AS | 967385816 | TANA |
| MAURA BYGG AS | 926038508 | NANNESTAD |
| MA. VVS AS | 922758654 | ASKER |
| MAXBO TEKNISKE TJENESTER AS | 924463163 | PORSGRUNN |
| MAXIM AS | 935915104 | HOLE |
| MAXI TJENESTER AS | 988188573 | SENJA |
| MAX MAL AS | 998779316 | OSLO |
| MAX PFISTER AS | 980464075 | GRIMSTAD |
| MAX-RØR AS | 997836871 | DRAMMEN |
| MAXRØR AS | 997265696 | BERGEN |
| MAXWELL NORGE AS | 913492528 | TRONDHEIM |
| MAZ SERVICE AS | 926574248 | NARVIK |
| MBA ENTREPRENØR AS | 990694001 | RANA |
| MB ANLEGG AS | 820721462 | GAUSDAL |