| SMARTECH LIMITED | Private company limited by shares | Dissolved |
| SMARTECH LIMITED | Private company limited by shares | Dissolved |
| SMARTECH R & D LIMITED | Private company limited by shares | Live |
| Smartech Limited | Private company limited by shares | Live |
| IO Smartech Limited | Private company limited by shares | Live |
| Smartech Adventure Limited | Private company limited by shares | Live |
| SMARTECH APPLIANCES COMPANY LIMITED | Private company limited by shares | Live |
| SMARTECH (ASIA) COMPANY LIMITED | Private company limited by shares | Dissolved |
| SMARTECH (ASIA) COMPANY LIMITED | Private company limited by shares | Dissolved |
| SMARTECH ASIA LIMITED | Private company limited by shares | Live |
| Smartech Solution (Asia) Limited | Private company limited by shares | Live |
| SMARTECH AUTOMATION LIMITED | Private company limited by shares | Live |
| Concord Smartech Company Limited | Private company limited by shares | Live |
| SMARTECH DISPLAY LIMITED | Private company limited by shares | Live |
| SEA DRAGON SMARTECH COMPANY LIMITED | Private company limited by shares | Live |
| HK Echo Smartech Limited | Private company limited by shares | Live |
| SMARTECH ENTERPRISE COMPANY LIMITED | Private company limited by shares | Live |
| SMARTECH HI-TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SMARTECH INVESTMENT LIMITED | Private company limited by shares | Live |
| SMARTECH MODULE LIMITED | Private company limited by shares | Live |
| SMARTECH SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| SMARTECH SOLUTIONS LIMITED | Private company limited by shares | Live |
| Smartech Solutions Limited | Private company limited by shares | Live |
| SMARTECH SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| Topon Smartech Limited | Private company limited by shares | Live |