| Company name | Reg. code |
|---|---|
| WOLSETY OÜ (former name CERACER OÜ) | 14542874 |
| WOLSETY SERVIZ OÜ kustutatud (former name Ceracer Haldus OÜ) | 12047917 |
| WOLSEM MEDIA OÜ kustutatud | 16088238 |
| WOLREY GEUMEDUNG OÜ | 12668849 |
| ADVANCED COMPANY OÜ (former name OÜ Polset) | 14384043 |