| ADVANTECH LIMITED | Private company limited by shares | Dissolved |
| ADVANTECH PCB LIMITED | Private company limited by shares | Live |
| Advantech Limited | Private company limited by shares | Dissolved |
| ADVANTECH HK LIMITED | | Live |
| ADVANTECH EURO ASIA LIMITED | Private company limited by shares | Live |
| COASTLINE ADVANTECH LIMITED | Private company limited by shares | Live |
| ADVANTECH FOAM LIMITED | Private company limited by shares | Live |
| Advantech Holding Limited | Private company limited by shares | Live |
| Asia Advantech Investment Limited | Private company limited by shares | Dissolved |
| ADVANTECH WELL LIMITED | Private company limited by shares | Live |
| ADVANTECH (YEN-HUA) CO. LIMITED | Private company limited by shares | Dissolved |