| Company name | Reg. code |
|---|---|
| EFO HOLDING OÜ (former name EFO Holding UÜ) | 14740083 |
| EFM HOLDING OÜ | 11355611 |
| SFO HOLDING OÜ kustutatud | 14224424 |
| ECO INVESTMENTS HOLDING OÜ | 14588273 |
| EFERELT OÜ (former name EF Holding OÜ) | 16446695 |
| EUROFINS ENVIRONMENT TESTING HOLDING ESTONIA OÜ kustutatud (former name EF Environment Testing Estonia Holding OÜ) | 14227428 |