| VASTEC CO. LIMITED | Private company limited by shares | Live |
| VASTECH LIMITED | Private company limited by shares | Live |
| VASTECH ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| VASTECH ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| VASTECH (H.K.) COMPANY LIMITED | Private company limited by shares | Dissolved |
| VASTECH INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| VASTECH INSTRUMENTS LIMITED | Private company limited by shares | Dissolved |
| VASTECH INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| VASTECH INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| VASTECH INVESTMENT LIMITED | Private company limited by shares | Dissolved |