| Q-STAR LIMITED | Private company limited by shares | Dissolved |
| QSTAR TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| QSTAR INTERNATIONAL EDUCATION TECHOLOGIES GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| QSTAR TECHNOLOGY GROUP LIMITED | Private company limited by shares | Live |
| Q-STAR (H.K.) LIMITED | Private company limited by shares | Live |
| HONGKONG QSTAR BUSINESS MANAGEMENT CONSULTANT CO., LIMITED | Private company limited by shares | Live |
| QSTAR STATIONERY CO., LIMITED | Private company limited by shares | Live |
| Q-Star Electrical Tech Co., Limited | Private company limited by shares | Live |
| QSTAR TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |