| TRIFAIR COMPANY LIMITED | Private company limited by shares | Dissolved |
| TRIFAIR ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| TRIFAIR ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| TRIFAIR FREIGHT COMPANY LIMITED | Private company limited by shares | Dissolved |
| TRIFAIR INVESTMENT LIMITED | Private company limited by shares | Live |
| TRIFAIRCO ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| TRIFAIRCO (HONG KONG) ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |