| Company Name | Type | Status |
|---|---|---|
| SJ-Tec (Group) Limited | Private company limited by shares | Dissolved |
| SJ-TECH HK CO., LIMITED | Private company limited by shares | Live |
| SJTG Consultancy Limited | Private company limited by shares | Live |
| HK SJTH TRADING LIMITED | Private company limited by shares | Live |
| SJTS INTERNATIONAL CO., LIMITED | Live | |
| SJTY Co., LIMITED | Private company limited by shares | Live |