| T.H.C. ENTERPRISE COMPANY LIMITED | Private company limited by shares | Dissolved |
| THCC COMPANY LIMITED | | Live |
| THCEL GROUP LIMITED | | Live |
| CHINA THCH INDUSTRY LIMITED | Private company limited by shares | Dissolved |
| RY THCHNOLOGY HK LIMITED | Private company limited by shares | Live |
| Thchone High-Tech Electronic International Co., Limited | Private company limited by shares | Live |
| T.H.C.K. Limited | | Live |
| H.K THCNFIYST COMMUNICATION CO., LIMITED | Private company limited by shares | Dissolved |
| THCNFIYST COMMUNICATION (H.K) CO., LIMITED | Private company limited by shares | Live |
| THCY INT'L GROUP LIMITED | Private company limited by shares | Dissolved |