| Ray Vaccine Limited | Private company limited by shares | Live |
| HK Vaccine Limited | Private company limited by shares | Live |
| TECHFIRST VACCINES BIOTECHNOLOGY LIMITED | Private company limited by shares | Live |
| Avalon Innovative Vaccines (HK) Limited | Private company limited by shares | Live |
| Hong Kong Vaccines Limited | Private company limited by shares | Live |
| WuXi Vaccines (Hong Kong) Limited | Private company limited by shares | Live |
| INOCULANT DNA VACCINES (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| International House of Vaccines Limited | | Live |
| MEDICAL VACCINES ONLINE DELIVERIES LIMITED | Private company limited by shares | Live |
| DNA Plus Vaccines Company Limited | | Live |
| VACCINET LIMITED | Private company limited by shares | Live |