| Company name | Reg. code |
|---|---|
| ESTROM GROUP OÜ (former name Brightlight OÜ) | 17043427 |
| ASTROI GROUP OÜ | 14170823 |
| ELTRON GROUP OÜ kustutatud | 12208734 |
| BESTREM GROUP OÜ | 12501486 |
| SOMMERISE OÜ (former name Eston Capital Group OÜ) | 12414310 |
| ANUGRAHA OÜ (former name Self-esteem Management Group OÜ) | 14106618 |
| SEITSE OÜ (former name Astro Media Group OÜ) | 14099172 |