| Company name | Reg. code |
|---|---|
| FILFOR OÜ | 14481693 |
| FILORE OÜ | 16026668 |
| FILKER OÜ | 12686936 |
| FILADOR OÜ | 11168599 |
| FILFIX OÜ | 16498918 |
| FILOORI OÜ | 12713343 |
| FILFIL OÜ | 17072883 |
| FILTON OÜ | 14053856 |
| FILMER OÜ | 11232854 |
| FILIKOR OÜ | 10282583 |
| FOOD FILTER OÜ | 16667054 |
| FILTER HOLDING OÜ kustutatud | 16100459 |
| FILTRO HOLDINGS OÜ | 17301763 |
| FILTER24.EE OÜ kustutatud | 11862294 |
| FILTER PLUS OÜ (former name Dagoterm OÜ) | 14610854 |
| FILTER EUROPE OÜ (former name Filter Waste OÜ) | 12615706 |
| FILTER FORGE OÜ kustutatud (former name Matterlist OÜ) | 14321156 |
| FILTER EXPRESS OÜ | 12325517 |
| FILTER SERVICE OÜ | 11987794 |
| ABC FILTER OÜ | 11466888 |
| FILTER SOLUTIONS OÜ (former name Filter Holding OÜ) | 14532752 |
| VALDI-FILLER OÜ | 10472728 |
| FILYOK JALAHOOLDUS OÜ | 16486275 |
| AIR FILTER OÜ | 12523128 |
| FILTER BRANDING OÜ | 14355528 |
| TP-FILTER ESTONIA OÜ | 12152595 |
| ADVANCED FILTER TECHNOLOGIES OÜ | 16351397 |
| PILFOR OÜ kustutatud | 10882283 |
| MILFOR SOLUTIONS OÜ (former name Timberking OÜ) | 12059524 |
| FULGOR OÜ | 10814399 |
| NIIFOR OÜ | 11187674 |
| FARFOR OÜ kustutatud | 14424844 |
| GYLFOR OÜ | 10433875 |
| SIFLOR OÜ | 16968459 |
| GILMOR OÜ (former name UÜ Gilmor) | 12884665 |
| BALFOR OÜ kustutatud | 10702080 |
| FINSOR OÜ | 14487845 |
| MILLOR OÜ kustutatud | 12643507 |
| DIKFOR OÜ kustutatud | 10986491 |
| PILPÕR OÜ | 14206550 |
| BILGOR OÜ | 10074867 |
| DIALFOR OÜ kustutatud | 12709844 |
| FIKSOR OÜ kustutatud | 11493715 |
| FALCOR S OÜ kustutatud | 10374049 |
| FINFUR EESTI OÜ kustutatud | 12764062 |
| BALFOR GRUPP OÜ kustutatud | 10935654 |
| GILDOR GRUPP OÜ | 17207739 |
| SIBFOR BALTIC OÜ kustutatud | 12570273 |
| ART MITFOR OÜ | 12786359 |
| FALCOR D. OÜ | 17279288 |