| Company name | Reg. code |
|---|---|
| RKF OÜ | 16046895 |
| RKFMK OÜ | 10490442 |
| RKB OÜ | 10938090 |
| RAF 1 OÜ | 12484948 |
| RTF OÜ | 14030909 |
| RKP OÜ | 14339044 |
| RJF OÜ | 14936127 |
| AKF OÜ | 11932037 |
| RKE OÜ kustutatud | 10100754 |
| RKRF OÜ | 14151688 |
| RKR OÜ | 16465333 |
| NKF OÜ kustutatud | 14070903 |
| RKI OÜ | 16221720 |
| RKS OÜ | 10773884 |
| JKF OÜ | 16205402 |
| LKF OÜ | 17141584 |
| RRF OÜ | 14559706 |
| RHF1 OÜ | 16993764 |
| RKP20 OÜ kustutatud | 14112381 |
| RKT OÜ | 10243896 |
| RKG OÜ | 16936413 |
| RKV OÜ | 10115218 |
| RKJ OÜ | 14431749 |
| RBF OÜ (former name Star Metal OÜ) | 14191877 |
| ROF OÜ | 17023092 |
| RKM OÜ | 14417293 |
| RKN OÜ | 16216239 |
| RKD OÜ kustutatud | 12506101 |
| RKE GROUP OÜ | 14474530 |
| RKR HOLDING OÜ | 16075552 |
| MKF HALDUS OÜ | 11246655 |
| RKK STEEL OÜ kustutatud (former name MHO Eesti OÜ) | 11455057 |
| RNF EUROPE OÜ | 11145032 |
| RKH MANAGEMENT OÜ kustutatud | 14500195 |
| RTF FINANCE OÜ kustutatud | 11165454 |
| RCF INVESTRANS OÜ kustutatud | 10922568 |
| JKF DIGITAL OÜ | 16837728 |
| KRF HOLDING OÜ kustutatud | 11656382 |
| RKL ARENDUS OÜ | 11286100 |
| RKS KONSULT OÜ | 17414740 |
| RKS DRIVE OÜ (former name RKS Sushi OÜ) | 12875896 |
| RKR TEENUSED OÜ | 17087442 |
| REF AKTSIAD OÜ | 16648246 |
| RTF-BELT OÜ kustutatud | 12595369 |
| RKO TRADE OÜ | 17153133 |
| RBF CONSULTING OÜ | 14793263 |
| RKS INVEST OÜ | 10890259 |
| ESTONTECO RKM OÜ | 12885720 |
| RFK GROUP OÜ kustutatud | 12424403 |
| RKS TEENUSED OÜ | 14180603 |