| Company name | Reg. code |
|---|---|
| FRONNOVA OÜ (former name Fronovics Labs OÜ) | 17110833 |
| FROSTNOVA OÜ kustutatud | 12247852 |
| FRONTOSA OÜ | 16522373 |
| FRONTAVA OÜ | 14566751 |
| PROINNOVA OÜ | 14804096 |
| PRONOVA42 OÜ | 17259506 |
| PRONOVA GROUP OÜ kustutatud | 12468613 |
| Z-TRONOVA OÜ | 17333562 |
| FRANOVA INVEST OÜ | 16951482 |