| Company name | Reg. code |
|---|---|
| OTSATOA OÜ | 17442794 |
| OTSASON OÜ | 17474179 |
| OTSATAK OÜ kustutatud | 14119839 |
| OTSARA OÜ | 10214742 |
| OTSATUS & POTSATUS OÜ | 16518070 |
| OTS OTSAGA OÜ | 16544386 |
| METSATOA OÜ | 16479683 |
| OKSATO OÜ | 10145343 |
| OSATO ENGINEERING 0Ü OÜ kustutatud (former name Stanton Systems OÜ) | 14059416 |