| SUMLAC CONCRETE BLOCKS, PRE-CAST MANUFACTORY LIMITED | Private company limited by shares | Dissolved |
| SUMLAC QUARRY LIMITED | Private company limited by shares | Dissolved |
| SUMLAND LIMITED | Private company limited by shares | Dissolved |
| SumLaw & Co. Limited | Private company limited by shares | Live |
| SUMLEASE FINANCE LIMITED | Private company limited by shares | Dissolved |
| SUMLEASE INVESTMENT LIMITED | Private company limited by shares | Live |
| SUMLEASE SHIPPING LIMITED | Private company limited by shares | Dissolved |
| SUMLIGHT LIMITED | Private company limited by shares | Dissolved |
| Sumlink Technology Limited | | Live |
| SUMLOK COMPANY LIMITED | | Live |
| HK SUMLONG (INT'L) DRESS LIMITED | Private company limited by shares | Dissolved |
| SUMLUCK FURNITURE LIMITED | Private company limited by shares | Dissolved |
| SUMLUCK INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SUMLUNG TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SUMLY ENTERPRISES LIMITED | Private company limited by shares | Dissolved |