| MAINSTAR LIMITED | Private company limited by shares | Live |
| MAINSTAR DISPLAY CO., LIMITED | Private company limited by shares | Live |
| MAINSTAR ELECTRICAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| MAINSTAR ENTERPRISES LIMITED | Private company limited by shares | Live |
| MAINSTAR INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| MAINSTAR SHIPPING LIMITED | Private company limited by shares | Live |
| FUJIAN MAINSTAR SHIPPING LIMITED | Private company limited by shares | Live |
| MAINSTAR TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| MAINSTAR TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Mainstar Textiles Limited | Private company limited by shares | Live |
| MAINSTAR TRADING LIMITED | Private company limited by shares | Live |