| Company Name | Type | Status |
|---|---|---|
| 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 |