| Company name | Reg. code |
|---|---|
| ECOTREK OÜ | 17045366 |
| ECOBRIK OÜ kustutatud | 11133554 |
| ECOTIRES OÜ kustutatud | 12101226 |
| ECOTEKS OÜ | 12620819 |
| ECOTREND OÜ (former name Osaühing ECOTREND) | 11461388 |
| ECOTANK OÜ | 11515635 |
| ECOTRIX OÜ | 17257016 |
| ECOREX OÜ kustutatud | 10219981 |
| ECOTEN OÜ | 12778822 |
| ECOTAK OÜ (former name Grinin OÜ) | 14181850 |
| ECOFREAK COSMETICS OÜ | 12766581 |
| ECOTIRES INTERNATIONAL OÜ | 12123512 |
| ECOTANK CORPORATION OÜ (former name BALTIC BOATS OÜ) | 10620235 |
| ECOTEC GLOBAL OÜ | 12158350 |
| ECOREM GRUPP OÜ | 17161762 |
| ECOTEX PROJECT OÜ | 14478857 |
| ECOLEK TOOTMINE OÜ kustutatud | 14804363 |
| ECORE TOURS OÜ kustutatud | 10685223 |
| EKATREK OÜ kustutatud | 14002439 |
| EVETREK OÜ | 16513730 |
| EKOTSEK OÜ | 14345122 |
| EKOTRAK OÜ | 12616999 |
| ENITREK OÜ | 11481327 |
| ESTOREK OÜ (former name RealSteel OÜ) | 12951829 |
| ESTREK OÜ | 11021933 |
| EXOTEK OÜ kustutatud (former name Exotek UÜ) | 12891240 |
| ENOTEK OÜ kustutatud | 10027589 |
| KELOCECO OÜ kustutatud (former name Ecolek OÜ) | 14511307 |
| ECXTREM INDUSTRIES OÜ (former name Biomecx OÜ) | 16211087 |
| ESTREK EHITUS OÜ kustutatud (former name Estrek Ehitus UÜ) | 14796729 |
| EKOTEK EESTI OÜ | 10455049 |
| ETREK PARTNERS OÜ | 12375484 |
| AUREX X OÜ (former name EKOTEK-GP OÜ) | 12269018 |