| Topstone International Finance Holding Limited | Private company limited by shares | Live |
| Topstone International Management Consultants Limited | Private company limited by shares | Live |
| SP Topstone Capital Management Limited | Private company limited by shares | Live |
| TOPSTONE CAPITAL MANAGEMENT LIMITED | Private company limited by shares | Live |
| SP Topstone Securities Limited | Private company limited by shares | Live |
| Topstone Network Technology Limited | Private company limited by shares | Live |
| TOPSTONE UNITED LIMITED | Private company limited by shares | Live |
| TOPSTONE VENTURES LIMITED | Private company limited by shares | Live |
| TOP-STROE CO., LIMITED | Private company limited by shares | Live |
| TOPSTYLE LIMITED | Private company limited by shares | Live |
| TOPSTYLE (ASIA) LIMITED | Private company limited by shares | Live |
| TOPSTYLE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| TOPSTYLE INVESTMENT LIMITED | Private company limited by shares | Live |
| TOPSTYLE PUBLISHING LIMITED | Private company limited by shares | Dissolved |
| TOPSTYLEDEAL LIMITED | Private company limited by shares | Live |
| TOPSU INTERNATIONAL COSTUME LIMITED | Private company limited by shares | Dissolved |
| TOPSUM LIMITED | Private company limited by shares | Dissolved |
| TOPSUM ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| TOPSUN LIMITED | Private company limited by shares | Dissolved |
| TOPSUN LIMITED | Private company limited by shares | Dissolved |
| TOPSUN C & C LIMITED | Private company limited by shares | Dissolved |
| Topsun Company Limited | Private company limited by shares | Live |
| Shenzhen Topsun Optoelectronic Co., Limited | Private company limited by shares | Live |
| TOPSUNG TECHNOLOGY LIMITED | Private company limited by shares | Live |
| TOPSUNNY LIMITED | Private company limited by shares | Dissolved |
| TOPSUPPLY LIMITED | Private company limited by shares | Dissolved |
| Topsupply Trading Limited | Private company limited by shares | Live |
| TOPSUPREME CORPORATE SERVICES LIMITED | Private company limited by shares | Live |
| TOPSURE LIMITED | Private company limited by shares | Dissolved |
| TOPSWAY LIMITED | Private company limited by shares | Live Commenced dormancy on 20-Feb-2004 |
| TOPSWISH LIMITED | Private company limited by shares | Live |
| TOPSY ENTERTAINMENT LIMITED | | Live |
| TOPSY RESOURCES LIMITED | Private company limited by shares | Dissolved |
| TOPSYN TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| TOPSYSTM ELECTRONIC TECHNOLOGY (H.K.) CO., LIMITED | Private company limited by shares | Dissolved |