| MAINGAIN INVESTMENT LIMITED | Private company limited by shares | Live |
| MAINGARD CAPITAL LIMITED | Private company limited by shares | Dissolved |
| MAINGATE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| MAINGO LIMITED | Private company limited by shares | Live |
| MAINGOLD INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| MAINGOLD INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| MAINGOOD LIMITED | Private company limited by shares | Dissolved |
| Main-good Technology Co., Limited | Private company limited by shares | Live |
| MAINGOOD DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| MAINGOOD DEVELOPMENT (H.K.) LIMITED | Private company limited by shares | Live |
| MAINGOOD ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| MAINGOOD (H.K.) LIMITED | Private company limited by shares | Live |
| MAINGOOD INTERNATIONAL LIMITED | Private company limited by shares | Live |
| MAINGRACE DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| MAINGRADE COMPANY LIMITED | Private company limited by shares | Dissolved |
| MAINGROUP LIMITED | Private company limited by shares | Live |