| H.K. JAN DOON CULTURAL CREATIVE LIMITED | Private company limited by shares | Live |
| Doon Optical (HK) Limited | Private company limited by shares | Live |
| DOON COMMON RAIL INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| DOONA HOLDINGS LIMITED | Private company limited by shares | Live |
| DOONA INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Doonamoo Limited | Private company limited by shares | Live |
| DOONBERG MAINTENANCE LIMITED | Private company limited by shares | Live |
| DOONESBURY COMPANY LIMITED | Private company limited by shares | Dissolved |
| DOONS PURCHASING GROUP LIMITED | Private company limited by shares | Dissolved |
| DOONSIDE LIMITED | Private company limited by shares | Dissolved |