| Company name | Reg. code |
|---|---|
| ZIRENIX OÜ | 17081066 |
| ZIREN - MARKETING & BRANDING OÜ | 17153920 |
| TERENIX OÜ | 17238562 |
| WIRENEX OÜ | 11768572 |
| TIRELIX OÜ | 12070187 |
| ANRENIX OÜ kustutatud (former name RAVAX OÜ) | 16044637 |
| AIRONIX OÜ | 17465737 |
| RENIX OÜ | 10026124 |
| SIRENI PLIKA OÜ kustutatud | 14428782 |
| FIENIX DIAMONDS OÜ | 16561781 |