| Ecstem International HK Limited | Private company limited by shares | Live |
| ECSTORM GROUP (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| ECSTUDY LIMITED | Private company limited by shares | Dissolved |
| ECSURE LIMITED | | Live |
| ECSY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ECSYSTEM LIMITED | Private company limited by shares | Live |
| ECTACO HONG KONG LIMITED | Private company limited by shares | Live |
| EC-TACTICS LIMITED | Private company limited by shares | Dissolved |
| HK ECTax Limited | Private company limited by shares | Live |
| ECTCM LIMITED | Private company limited by shares | Live |
| ECTD Group Limited | Private company limited by shares | Dissolved |
| ecTDEC Limited | Private company limited by shares | Live |
| ECTEAM LIMITED | Private company limited by shares | Live |
| ECTEC PRODUCTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| ECTEC SOLUTIONS LIMITED | Private company limited by shares | Live |
| ECTECH LIMITED | Private company limited by shares | Dissolved |
| ECTECH TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| ECTEST COMPANY LIMITED | Private company limited by shares | Live |
| EC-Time Co., Limited | Private company limited by shares | Live |
| EC-TIMES TECH CO., LIMITED | Private company limited by shares | Live |
| ECTK-Service Limited | Private company limited by shares | Live |
| ECTL LIMITED | Private company limited by shares | Live |
| E-C-TONG (HK) CORPORATION LIMITED | Private company limited by shares | Live |
| ECTOP TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| ECTOP INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Dissolved |
| ECTOPICAL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ECTOSHOP LIMITED | Private company limited by shares | Dissolved |
| 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 |
| Ectwins Trading Company Limited | Private company limited by shares | Dissolved |
| ECUMENICAL COALITION ON THIRD WORLD TOURISM (ECTWT) LIMITED | Company limited by guarantee | Dissolved |
| Shanghai Ecuadorian Trading Co., Limited | Private company limited by shares | Live |
| e-cube Limited | Private company limited by shares | Dissolved |
| E-CUBE SPORTS ENTERTAINMENT LIMITED | Private company limited by shares | Dissolved |
| e-Cube Exhibition Company Limited | Private company limited by shares | Live |
| E-CUBE SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| eCube Technology Limited | Private company limited by shares | Dissolved |
| SHENZHEN ECUBE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| eCucheng Limited | Private company limited by shares | Live |
| Ecuhelp Limited | | Live |
| E-CULTURE LIMITED | Private company limited by shares | Live |
| ECUMENICAL HUB LIMITED | | Live |
| ECUMUNICATION Y INVESTMENT CO., LIMITED | Private company limited by shares | Live |
| ECUOBD ELECTRONICS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ECup HK Limited | Private company limited by shares | Live |
| ECUREUIL TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| ECURO LIMITED | Private company limited by shares | Dissolved |
| ECUS LIMITED | Private company limited by shares | Live |
| ECUSSON LIMITED | Private company limited by shares | Live |
| E-CUSTOMERS LIMITED | Private company limited by shares | Live |
| ECVC INTERNATIONAL HOLDING LIMITED | Private company limited by shares | Live |
| EC-VENTURE LIMITED | Private company limited by shares | Dissolved |
| ECVISUS CAPITAL (HONGKONG) LIMITED | Private company limited by shares | Live |
| ECVOCARS Limited | | Live |
| ECVS ASIA DISTRIBUTION CENTER LIMITED | Private company limited by shares | Live |
| ECWA Limited | Private company limited by shares | Live |
| ECWAY LIMITED | | Live |
| ecWeb Limited | Private company limited by shares | Live |
| ECWELL LIMITED | Private company limited by shares | Live |
| Ecwid Limited | | Live |
| ECWIN INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| EC-Wise Network Technologies Limited | Private company limited by shares | Live |
| ECwise Trading Limited | Private company limited by shares | Live |
| ECXX HONG KONG LIMITED | Private company limited by shares | Live |
| ECYB COMMUNICATION LIMITED | Private company limited by shares | Live |
| ECYBER ADVERTISING CO., LIMITED | Private company limited by shares | Live |
| E.CYBER CONCEPT LIMITED | Private company limited by shares | Dissolved |
| E.CYBER CREATION LIMITED | Private company limited by shares | Dissolved |
| ECYBER.COM LIMITED | Private company limited by shares | Live |
| E-CYBERNET LIMITED | Private company limited by shares | Dissolved |
| ECYBERPAY.COM LIMITED | Private company limited by shares | Dissolved |
| eCycle Edu Solutions Limited | Private company limited by shares | Dissolved |
| Ecycle Tech Limited | Private company limited by shares | Live |
| E-cycle Technology Limited | | Live |
| IT eCycling Solutions (HK) Limited | Private company limited by shares | Live |
| Eczw Hongkong Limited | Private company limited by shares | Live |