| Company name | Reg. code |
|---|---|
| KOPELSON OÜ | 12748821 |
| KOPSON OÜ | 17162675 |
| MORELSON OÜ | 10617664 |
| KOMESON OÜ | 11175441 |
| KARELSON&POJAD OÜ kustutatud (former name Karelson & Pojad) | 10267537 |
| ROHELSON GRUPP OÜ | 12210323 |
| PEREARST HIIE KARELSON OÜ | 10894004 |
| INTS ELEKTER OÜ (former name Foperson OÜ) | 11711862 |