| TAI YAU IRONWORKS LIMITED | Private company limited by shares | Dissolved |
| PO CHEONG IRONWORKS ENGINEERING LIMITED | | Live |
| San Wa Ironworks Engineering Limited | Private company limited by shares | Live |
| WING LOK IRONWORKS ENGINEERING LIMITED | | Live |
| WING MING IRONWORKS ENGINEERING LIMITED | Private company limited by shares | Live |
| HOPEWELL IRONWORKS LIMITED | Private company limited by shares | Dissolved |
| IRONWORKS INDUSTRIAL LIMITED | Private company limited by shares | Live |
| FU YUEN IRONWORKS LIMITED | Private company limited by shares | Dissolved |