| Company Name | Type | Status |
|---|---|---|
| WINDOOR LIMITED | Private company limited by shares | Dissolved |
| WINDOOR TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| WIN-DOOR TRANSPORTATION LIMITED | Private company limited by shares | Dissolved |
| Yintat Aluminum WinDoor Company Limited | Private company limited by shares | Live |
| GERMANY ALEXANDER WIN-DOORS TECH (HK) LIMITED | Private company limited by shares | Dissolved |
| HK YALIANG WINDOOR&STRUCTURE LIMITED | Private company limited by shares | Live |