| Company name | Reg. code |
|---|---|
| OCO OÜ | 12225098 |
| OCOLORI OÜ | 17083295 |
| OCOLOCO OÜ | 14681200 |
| OCONNOR HORSES OÜ kustutatud | 11547995 |
| OCOTRADE EUROPE OÜ kustutatud | 14473104 |
| POCO LOCO OÜ | 12081038 |
| ORO OÜ | 14159460 |
| RCO OÜ | 14572438 |
| OCTO OÜ | 11937483 |
| TOCO OÜ | 16756935 |
| FCO1 OÜ kustutatud | 16667887 |
| ÖKO24 OÜ kustutatud | 12746839 |
| WCO OÜ | 16698942 |
| ÖÄÕ OÜ | 16571360 |
| OVO OÜ | 10297840 |
| ICO OÜ kustutatud | 14314446 |
| HOCO OÜ | 14745637 |
| 7OCTO OÜ | 16272344 |
| ECO100 OÜ | 14925931 |
| OLO OÜ kustutatud | 12981291 |
| OIO OÜ | 12394056 |
| ECO OÜ kustutatud | 12042722 |
| OSO OÜ | 12229937 |
| MCO OÜ | 16270747 |
| OCT OÜ kustutatud | 12205351 |
| ÖKO OÜ | 14239242 |
| OCP OÜ | 16135239 |
| ECO ADVICE OÜ | 10959152 |
| ECO WORLD OÜ | 14769193 |
| OLO CONSULT OÜ | 14280724 |
| COCO CASE OÜ | 14036496 |
| ECO4TOURISM OÜ | 16915693 |
| OCTO GONE OÜ | 16193662 |
| ECO.LIVING OÜ | 16741106 |
| MCO COMPUTING OÜ | 17270063 |
| ECO-ST OÜ | 10893068 |
| OKO LOTO OÜ | 12965464 |
| ECO-BETOON OÜ | 16470759 |
| ECO RIDE OÜ (former name Synergy Power OÜ) | 12703215 |
| OWO INVEST OÜ | 12285048 |
| OSCO HEAT OÜ | 12293674 |
| JCO-CORP OÜ (former name Newtter OÜ) | 16580399 |
| ECO BRAND OÜ | 12254272 |
| ECO BENELUX OÜ kustutatud | 16672517 |
| ECO MAMMAS OÜ kustutatud | 16302861 |
| POCO HOLDING OÜ | 14085075 |
| ECO TORU OÜ (former name Kinza Grill OÜ) | 14264636 |
| ECO SEPTIC OÜ | 16806923 |
| ECO-MOS OÜ kustutatud | 11430330 |
| ECO KODU OÜ kustutatud | 12248610 |