| SYTA TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SYTAC LIMITED | Private company limited by shares | Dissolved |
| SYTC HK Limited | | Live |
| SYTECH LIMITED | Private company limited by shares | Live |
| SYTEK SOLUTION LIMITED | Private company limited by shares | Live |
| SYTEX LIMITED | Private company limited by shares | Dissolved |
| SYTEX LIMITED | Private company limited by shares | Live |
| SYTHE LIMITED | Private company limited by shares | Dissolved |
| SYTHERA TRADE ASIA LIMITED | Private company limited by shares | Dissolved |
| SYTHNOSIS INVESTMENT HONG KONG LIMITED | Private company limited by shares | Dissolved |
| SYTING TRADE LIMITED | | Live |
| SYTNA LIMITED | Private company limited by shares | Live |
| SYTON TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HK SYTONG LIMITED | Private company limited by shares | Live |
| Sytool Industrial Limited | Private company limited by shares | Live |
| SYT-SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| Sytun Machinery Limited | Private company limited by shares | Live |
| SYTYS Co., Limited | Private company limited by shares | Live |