| Celltron HK Limited | Private company limited by shares | Live |
| CELLTRONIK INVESTMENT HK LIMITED | Private company limited by shares | Live |
| CELLTRONIK MICROWAVE LIMITED | Private company limited by shares | Dissolved |
| CELLTRONIK MICROWAVE HK LIMITED | Private company limited by shares | Live |
| CELLTRONIK TECHNOLOGY HK LIMITED | Private company limited by shares | Live |
| CELLTRONIX LIMITED | Private company limited by shares | Live |
| CELLTRONIX AUTOMATION LIMITED | Private company limited by shares | Dissolved |
| CELLTRONIX TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| CELLTRONIX TELECOM LIMITED | Private company limited by shares | Dissolved |