| Company name | Reg. code |
|---|---|
| QRS OÜ | 14487997 |
| FRS OÜ | 12666632 |
| RQS OÜ kustutatud | 12394139 |
| MRS OÜ | 12063908 |
| BRS OÜ | 14772410 |
| NRS OÜ | 14681535 |
| CRS OÜ | 12015395 |
| DRS 9 OÜ | 16566933 |
| QHS OÜ | 16674226 |
| QRB OÜ kustutatud | 12912924 |
| ARS OÜ | 11922300 |
| QMS OÜ | 11404410 |
| IRS OÜ | 10619427 |
| QPS OÜ kustutatud | 12782963 |
| GRS 24 OÜ kustutatud | 14584051 |
| QLS OÜ (former name QLS AS) | 11299278 |
| WRS OÜ | 14035203 |
| RRS OÜ | 16532029 |
| 3QWS OÜ | 14632399 |
| ORS123 OÜ kustutatud (former name Oristano OÜ) | 14515624 |
| QOS OÜ | 17141762 |
| QRES OÜ | 16960044 |
| GRS OÜ | 12143555 |
| LRS OÜ kustutatud | 12343225 |
| SRS OÜ | 16024528 |
| NRS SCANDINAVIA OÜ (former name Miestic OÜ) | 14372567 |
| ARS ENERGY OÜ kustutatud | 11509497 |
| HRS CAPITAL OÜ | 12863396 |
| ARS CONSULT OÜ | 17379305 |
| KRS HOLDING OÜ | 16536694 |
| MRS DEVELOPMENT OÜ | 14297140 |
| DUCTO PRS OÜ kustutatud | 12559385 |
| MRS FINANCE OÜ | 12011167 |
| XRS MEDIA OÜ kustutatud | 16497385 |
| VRS SOLUTIONS OÜ kustutatud (former name VRS Solutions UÜ) | 14796913 |
| ERS GROUP OÜ | 16729217 |
| RRS REBAR OÜ | 17171177 |
| SRS KOMPANII OÜ kustutatud | 11534578 |
| RRS ALLSTAR OÜ | 17079974 |
| ARS ONLINE OÜ | 12417225 |
| XRS PIPE OÜ (former name Raixmet OÜ) | 12887830 |
| QMS DRILLERS OÜ kustutatud | 12627780 |
| MEZENCAP-IRS2 OÜ | 17359872 |
| ARS VAIBASTUUDIO OÜ | 10007997 |
| MEZENCAP-IRS1 OÜ | 17359136 |
| MEZENCAP-IRS3 OÜ | 17373202 |
| JRS CONSTRUCTION OÜ | 14492521 |
| KRS INVEST OÜ kustutatud | 14239609 |
| CRE8ORS OÜ | 12089152 |
| MRS CAPITAL OÜ | 17308682 |