| STHA ELECTRONIC TECHNOLOGY LIMITED | | Live |
| Sthana Performing Arts Limited | Private company limited by shares | Live |
| Sthenos Meditech Co., Limited | Private company limited by shares | Live |
| St.Herb Limited | Private company limited by shares | Live |
| SThermal Limited | Private company limited by shares | Live |
| STHK LIMITED | Private company limited by shares | Live |
| IM S&T(HK) Co., Limited | Private company limited by shares | Live |
| CLO S&T(HK) CO., LIMITED | Private company limited by shares | Live |
| STHK TRADING LIMITED | Private company limited by shares | Live |
| Sthlm Strand Holding Company Limited | Private company limited by shares | Live |
| ST-HONDA TECH LIMITED | Private company limited by shares | Live |
| ST.HONEST ELECTRONIC CO, LIMITED | Private company limited by shares | Live |
| ST.HOPE GROUP LIMITED | Private company limited by shares | Live |
| STHREE LIMITED | Private company limited by shares | Live |
| STHRIVE LIMITED | Private company limited by shares | Live |
| S-THUNDER LIMITED | Private company limited by shares | Live |