| C.SA WEDDING LIMITED | Private company limited by shares | Live |
| CSAA LIMITED | Private company limited by shares | Dissolved |
| CSAarchitects Limited | Private company limited by shares | Live |
| CSAD LIMITED | | Live |
| CSafe Marine Limited | | Live |
| HONG KONG CSAI NETWORK TECHNOLOGY LIMITED | | Live |
| CSail Limited | Private company limited by shares | Live |
| C-Sam HK Limited | Private company limited by shares | Dissolved |
| Csapotech Limited | Private company limited by shares | Live |
| CSAR LIMITED | Private company limited by shares | Live |
| C&SATURNUS LIMITED | | Live |
| CSA-UL CONSULTANTS LIMITED | Private company limited by shares | Dissolved |