| POLYTECH LIMITED | Private company limited by shares | Dissolved |
| POLYTECH M&E COMPANY LIMITED | Private company limited by shares | Dissolved |
| POLY-TECH (R & D) LIMITED | Private company limited by shares | Dissolved |
| POLYTECH LIMITED | Private company limited by shares | Live |
| PolyTech 3.0 Limited | | Live |
| POLYTECH CENTURY LIMITED | Private company limited by shares | Live |
| POLYTECH ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| POLYTECH INNOVATION LIMITED | | Live |
| LONG POLYTECH HK LIMITED | Private company limited by shares | Live |
| FET POLYTECHNIC LIMITED | Private company limited by shares | Dissolved |
| POLYTECHNIC COMPANY LIMITED | Private company limited by shares | Dissolved |
| POLYTECHNOLOGICAL LIMITED | Private company limited by shares | Live |
| OMNI POLYTECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| POLYTECHS (ASIA) LIMITED | Private company limited by shares | Live |