| FUSTAR LIMITED | Private company limited by shares | Live |
| FUSTAR INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| FUSTEC CO., LIMITED | Private company limited by shares | Live |
| FUSTEC INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| Fustech Limited | | Live |
| FUSTEK INDUSTRIAL DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| Fuster Group Co., Limited | Private company limited by shares | Live |
| Hong Kong Fuster Technology Co., Limited | | Live |
| FUSTONE RESOURCES LIMITED | Private company limited by shares | Live |
| FUSTUDIO Creative Agency Limited | | Live |