| SINTO DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| SINTO DEVELOPMENTS LIMITED | Private company limited by shares | Dissolved |
| SINTO International Company Limited | Private company limited by shares | Live |
| SINTO TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| Sinto Electronic Technology Co., Limited | Private company limited by shares | Live |
| SINTOC CO., LIMITED | | Live |
| SINTO-LED LIMITED | Private company limited by shares | Live |
| SINTON LIMITED | Private company limited by shares | Dissolved |
| SINTON LIMITED | Private company limited by shares | Dissolved |
| SINTOP LIMITED | Private company limited by shares | Dissolved |
| SINTOP LIMITED | Private company limited by shares | Live |
| Sintop LIMITED | | Live |
| SINTOP ELECTRONICS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| JINAN SINTOP CO., LIMITED | | Live |
| SINTOP TECHNOLOGY ELECTRICS CO., LIMITED | Private company limited by shares | Live |
| Sintop Trading Limited | Private company limited by shares | Live |
| Sintory International Company Limited | Private company limited by shares | Live |
| SINTOTEL CO., LIMITED | Private company limited by shares | Live |
| SINTOTEL GROUP LIMITED | Private company limited by shares | Live |
| SINTOY GIFTS & TOYS LIMITED | Private company limited by shares | Live |