| E.O.C & MINERALS INVESTMENT CO., LIMITED | Private company limited by shares | Live |
| E.OCEAN LIMITED | Private company limited by shares | Dissolved |
| Eocean Limited | Private company limited by shares | Live |
| E-Oceans Limited | Private company limited by shares | Live |
| EoCell Limited | Private company limited by shares | Live |
| EOCENE LIMITED | Private company limited by shares | Dissolved |
| Eochip H.K. Semiconductor Limited | Private company limited by shares | Live |
| EOCM International Enterprise Limited | Private company limited by shares | Live |
| e-Octopus Holding Limited | Private company limited by shares | Dissolved |
| e-Octopus.net Limited | Private company limited by shares | Live |