| Company name | Reg. code |
|---|---|
| RMINSTALLATION OÜ (former name Dovapek OÜ) | 14767946 |
| INSTALLATION GRUPP OÜ (former name Guldfeber OÜ) | 14674771 |
| JR INSTALLATION OÜ (former name Instafur OÜ) | 16079920 |
| TAP INSTALLATION OÜ | 14706436 |
| ALPO INSTALLATION OÜ | 14740574 |
| FC INSTALLATION OÜ | 17322860 |
| NORDIC INSTALLATION OÜ | 16129693 |
| KRL INSTALLATION OÜ | 16918510 |
| FLOORING INSTALLATION OÜ kustutatud (former name Flooring Insallation OÜ) | 14444739 |
| LMTT INSTALLATION OÜ (former name Tuulmet Installation OÜ) | 14839321 |
| JSN INSTALLATION OÜ kustutatud | 11552429 |
| FINNHUS INSTALLATION OÜ kustutatud | 11631123 |
| KINGLI INSTALLATION OÜ | 12871160 |
| ACDC INSTALLATION OÜ kustutatud | 16001088 |
| TOP INSTALLATION OÜ kustutatud | 12251227 |
| HH-INSTALLATION OÜ | 12226063 |
| ILMASTOINTI INSTALLATION OÜ (former name M&N PROF OÜ) | 12598103 |
| INSTALLATION PARTNER OÜ | 16875672 |
| VGI INSTALLATION OÜ | 17181170 |
| MT INSTALLATION OÜ | 16227059 |
| TR INSTALLATION OÜ | 12594654 |
| MK INSTALLATION OÜ | 14427087 |
| ST INSTALLATION OÜ | 14168973 |
| HOME INSTALLATION OÜ | 16097355 |
| KV INSTALLATION OÜ | 17348523 |
| KLGM INSTALLATION OÜ | 17350905 |
| AMERETA INSTALLATION OÜ kustutatud | 12185370 |
| BALTSAFE INSTALLATION OÜ | 11449269 |
| TURRITOPSIS-INSTALLATION OÜ kustutatud | 16677161 |
| MRU INSTALLATION OÜ | 16484649 |
| TAMI INSTALLATION OÜ | 14816975 |
| MARIEL INSTALLATION OÜ kustutatud | 12563889 |
| RAJU INSTALLATION OÜ (former name Ecomar Est OÜ) | 12723028 |
| KAUKSI INSTALLATION OÜ kustutatud | 16190959 |
| INSTALLATION SYSTEM OÜ kustutatud | 11980361 |
| ROYAL BUILDING INSTALLATION OÜ kustutatud | 12387122 |
| FIRST CLASS INSTALLATION OÜ kustutatud | 14451093 |
| SOLAR SYSTEM INSTALLATION OÜ | 16537972 |
| A/C INSTALLATION OÜ | 16394604 |
| TOP INSTALLATION SERVICE OÜ kustutatud | 12854173 |
| PIPE SYSTEMS INSTALLATION OÜ kustutatud | 12010104 |
| ITS01 HOLDING OÜ (former name Installation OÜ) | 14755050 |
| SIDEWORKS OÜ (former name OÜ transport ja installation) | 16051732 |
| NORDFOX PRODUCTION OÜ (former name N.F. installation OÜ) | 12491581 |
| NORKWORN OÜ kustutatud (former name Brikks Baltic OÜ) | 12010802 |
| AVAMER TOOTMINE OÜ (former name Glastop Tootmine OÜ) | 16631518 |