| Company Name | Type | Status |
|---|---|---|
| QUANTRO INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| QUANTRONICS AUDIO LIMITED | Private company limited by shares | Dissolved |
| QUANTRONICS MANUFACTURING (H.K.)LIMITED | Private company limited by shares | Dissolved |
| QUANTRONICS PHOTOGRAPHIC LIMITED | Private company limited by shares | Dissolved |
| QUANTRONICS TELECOMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |