| C.A.M.S. Trading Co. Limited | Private company limited by shares | Live |
| CAMSAIL CO., LIMITED | Private company limited by shares | Live Commenced dormancy on 23-May-2016 |
| CAMSAL LIMITED | Private company limited by shares | Dissolved |
| HK CAMSAMFON COMPANY LIMITED | Private company limited by shares | Live |
| CAMSBERG LIMITED | Private company limited by shares | Dissolved |
| CAMSBURY LIMITED | Private company limited by shares | Dissolved |
| CAMSCAN LIMITED | | Live |
| CAMSDIGITAL LIMITED | Private company limited by shares | Live |
| Camseas Financial Limited | Private company limited by shares | Live |
| Camseen Limited | Private company limited by shares | Live |
| CamSet Advertising Company Limited | | Live |
| CAMSHING INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Camshot Limited | Private company limited by shares | Live |
| CAMSI BIOLOGY TECHNOLOGY (HK) DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| CAMSILK COMPANY LIMITED | Private company limited by shares | Live |
| CAMSING INVESTMENT (GROUP) COMPANY LIMITED | Private company limited by shares | Live |
| Camsing Medicare Company Limited | Private company limited by shares | Live |
| CAMSO Limited | Private company limited by shares | Live |
| CAMSON LIMITED | Private company limited by shares | Live |
| CAMSON INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Live |
| Camspar Limited | Private company limited by shares | Dissolved |
| CAMSTAR LIMITED | Private company limited by shares | Dissolved |
| CAMSUN INVESTMENTS LIMITED | Private company limited by shares | Live |
| Camsy Holding Limited | Private company limited by shares | Live |
| Camsys Limited | Private company limited by shares | Live |
| CAMSYS ENTERPRISE LIMITED | Private company limited by shares | Live |
| CAMSYS TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |