| YIP WO KEE HOLU COMPANY LIMITED | Private company limited by shares | Dissolved |
| HOLUCK COMPANY LIMITED | Private company limited by shares | Dissolved |
| HOLUCKY HK LIMITED | Private company limited by shares | Dissolved |
| Holumino Limited | Private company limited by shares | Live |
| HOLUN ENGINEERING LIMITED | | Live |
| HOLUN INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| HOLUN GROUP TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| HOLUNG LIMITED | Private company limited by shares | Live |
| HOLUNRICH LIMITED | Private company limited by shares | Live |
| HOLUNS GROUP LIMITED | Private company limited by shares | Live |
| Holutions Company Limited | Private company limited by shares | Live |
| HK HOLUYN PHOTOELECTRICITY TECHNOLOGY LIMITED | Private company limited by shares | Live |