| Company name | Reg. code |
|---|---|
| KATECH SOLUTIONS OÜ | 16840400 |
| KATCH SOLUTIONS OÜ | 16677437 |
| ELTECH SOLUTIONS OÜ (former name Eltech Service OÜ) | 12062710 |
| ENGINEERING AND EDTECH SOLUTIONS OÜ | 16144818 |
| CONTENTPULSE OÜ (former name BVTech Solution OÜ) | 16843396 |
| ARRO HOLDING OÜ (former name Arro Santech Solutions OÜ) | 14188361 |
| TEAM HEIMAR OÜ (former name Best Green Pine Tech Solutions OÜ) | 16292743 |
| TECHPROTRADE OÜ (former name Tech Profit Solutions OÜ) | 11552056 |
| COMPOTEXA OÜ kustutatud (former name Cruise Training Solutions OÜ) | 14444108 |