| Company name | Reg. code |
|---|---|
| ERT KONSULT OÜ | 10646393 |
| EITSIFY CONSULTING OÜ (former name Erti Luik konsultatsioonid OÜ) | 17031358 |
| ERG KONSULT OÜ | 12194653 |
| ART LINK CONSULT OÜ | 17153073 |
| REVAL CONSULT EAT OÜ kustutatud | 10277843 |
| GOLF & GOURMET TRAVEL OÜ (former name GRT Consult OÜ) | 14198908 |