| ECTRA EURO-CHINA TRADE LIMITED | Private company limited by shares | Dissolved |
| ECTRA Industrial Technology Limited | Private company limited by shares | Live |
| ECTRA EURO-CHINA TRADING LIMITED | Private company limited by shares | Dissolved |
| ECTRA EURO-CHINA TRADING LIMITED | Private company limited by shares | Dissolved |
| ECTRA EURO-CHINA TRADING LIMITED | Private company limited by shares | Live |
| ECT-RAD COMPANY LIMITED | Private company limited by shares | Live |
| ECTRADE LIMITED | Private company limited by shares | Dissolved |
| ECTRADE LIMITED | Private company limited by shares | Live |
| ECTRADE (HK) COMPANY LIMITED | Private company limited by shares | Dissolved |
| EC-TRADE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ECTRADER LIMITED | Private company limited by shares | Live |
| EC-TRAIN LIMITED | Private company limited by shares | Dissolved |
| Gude Ectronics Co., Limited | Private company limited by shares | Live |
| ECtronics Technology Limited | Private company limited by shares | Live |
| ECTRONICS HK TECHNOLOGY LIMITED | Private company limited by shares | Live |