| 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 |
| Sintra Limited | Private company limited by shares | Live |
| SINTRALONG LIMITED | Private company limited by shares | Live |
| SINTRON LIMITED | Private company limited by shares | Live |
| SINTRON INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Sintronic E&M Engineering Limited | Private company limited by shares | Live |
| SINTRONIC (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| SINTRONIC TECHNOLOGY HONG KONG LIMITED | Private company limited by shares | Live |
| SINTRONICS ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| Sintron-Polymec (Hong Kong) Limited | Private company limited by shares | Live |
| SINTUBE LIMITED | Private company limited by shares | Dissolved |
| SINTUS LIMITED | Private company limited by shares | Dissolved |