| Company Name | Type | Status |
|---|---|---|
| SMST 17J Limited | Private company limited by shares | Live |
| SMST LIMITED | Live | |
| S.M.S.T (ASIA) INVESTMENT LIMITED | Private company limited by shares | Live |
| SMSTAR TECH. COMPANY LIMITED | Private company limited by shares | Dissolved |
| SMS-Tele.com Limited | Private company limited by shares | Live |