| ITRO HK Limited | Private company limited by shares | Dissolved |
| I-TRON LIMITED | Private company limited by shares | Dissolved |
| HK ITRONIC LIMITED | Private company limited by shares | Live |
| ITRONICS LIMITED | Private company limited by shares | Live |
| iTronics Co., Limited | Private company limited by shares | Live |
| iTronics Group Limited | Private company limited by shares | Live |
| iTRONICS (PNG) LIMITED | Private company limited by shares | Live |
| iTronics Technology Limited | Private company limited by shares | Dissolved |
| ITROUTE LIMITED | Private company limited by shares | Dissolved |