| SUNDO ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| SUNDOG ELECTRONICS CO., LIMITED | Private company limited by shares | Live Commenced dormancy on 08-Apr-2016 |
| SUNDON LIMITED | Private company limited by shares | Dissolved |
| HK SUNDON TRADE CO., LIMITED | Private company limited by shares | Live |
| SUNDON INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SUNDOO LIMITED | Private company limited by shares | Live |
| SUNDOO TECHNOLOGY LIMITED | | Live |
| SUNDOOR LIMITED | Private company limited by shares | Dissolved |
| SUNDOT COMPANY LIMITED | Private company limited by shares | Dissolved |
| SUNDOT (GROUP) LIMITED | Private company limited by shares | Dissolved |
| SUNDOT INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SUNDOT INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Sundow HK Limited | Private company limited by shares | Live |
| SUNDOWN LIMITED | Private company limited by shares | Dissolved |
| Sundowner Consulting Limited | Private company limited by shares | Dissolved |
| Sundoy Limited | Private company limited by shares | Dissolved |