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| PROEL AS | 983980031 | VÅGÅ |
| PROESS AS | 921636326 | ÅLESUND |
| PROFAB HOUSES | 916687281 | SARPSBORG |
| PROFF BYGGMESTER AS | 996428265 | LILLESTRØM |
| PROFFBYGG PL AS | 989748459 | BÆRUM |
| PROFF ELEKTRO AS | 996341275 | TRONDHEIM |
| PROFF EL&IT AS | 916519338 | ORKLAND |
| PROFF HÅNDVERKER GROUP AS | 920878555 | AURSKOG-HØLAND |
| PROFFLIS & PUSS AS | 921000626 | OSLO |
| PROFF PROSJEKT AS | 917687951 | ÅS |
| PROFF-RØR AS | 885300162 | VERDAL |
| PROFF RØRLEGGER AS | 911640228 | LILLESTRØM |
| PROFF RØR-SERVICE AS | 931830066 | NORDRE FOLLO |
| PROFF RØRSERVICE AS | 920045685 | OSLO |
| PROFF SNEKKERSERVICE AS | 930347698 | OSLO |
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| PROFF-VVS HUSSEIN | 931096737 | ASKER |
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| PROFIL BYGG AS | 918187766 | PORSGRUNN |
| PROFILBYGG TRONDHEIM AS | 990058377 | TRONDHEIM |
| PROFIL-FASADE AS | 939698868 | MELHUS |
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| PROFILTEAM AS | 938184275 | HAMAR |
| PROFIL TREBYGG AS | 888488332 | FLESBERG |
| PROGETTO AS | 898072312 | DRAMMEN |
| PROGRUPPEN AS | 815098412 | INDRE ØSTFOLD |
| PRO GRUPPEN NORWAY AS | 925719242 | ENEBAKK |
| PRO INVENIA AS | 993404381 | TRONDHEIM |
| PROJEKT PLANUNG AS | 964105944 | OSLO |
| PROKLIMA CONSULTING AS | 924712538 | ASKER |
| PROLED AS | 924914831 | STORD |
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| PROPOINT SURVEY AS | 988912859 | BÆRUM |
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| PROSJEKTBYGG AS | 966768673 | HERØY (MØRE OG ROMSDAL) |
| PROSJEKT & ENØK PARTNER AS | 996048616 | TØNSBERG |
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| PROSJEKT KONSULT AS | 956435226 | HAUGESUND |
| PROSJEKTKONTROLL AS | 932041367 | SULA |