| S.A.S.T. (HONG KONG) ENTERTAINMENT LIMITED | Private company limited by shares | Dissolved |
| SONOMA SAST ELECTRONIC (HK) CO., LIMITED | Private company limited by shares | Live |
| SAS-TECH INDUSTRIAL GROUP LIMITED | Private company limited by shares | Live |
| Sastex Clothing HK Limited | Private company limited by shares | Live |
| SASTHEL Limited | Private company limited by shares | Live |
| SASTON COMPANY LIMITED | Private company limited by shares | Live |
| SASTRA LIMITED | Private company limited by shares | Dissolved |
| S.Astron Electron Co., Limited | Private company limited by shares | Live |