| ECHANG DOORS AND WINDOWS INDUSTRY (HK) CO., LIMITED | Private company limited by shares | Live |
| E-CHANG INVESTMENT CONSTRUCTION LIMITED | Private company limited by shares | Live |
| E-change Limited | Private company limited by shares | Live |
| eChannel Asia Limited | Private company limited by shares | Live |
| E-CHANNEL INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| Echannel Hk Trading Limited | Private company limited by shares | Live |
| ECHANSONNERIE LIMITED | Private company limited by shares | Dissolved |
| eChaps Limited | Private company limited by shares | Live |
| ECH-AQUAKEY CO., LIMITED | Private company limited by shares | Live |
| ECHARGE LIMITED | Private company limited by shares | Live |
| ECHARGER HOLDING LIMITED | Private company limited by shares | Live |
| Echash Technology Limited | Private company limited by shares | Live |
| ECHASL LIMITED | | Live |
| eChatty Information Technology (Hong Kong) Limited | Private company limited by shares | Live |
| echcool Limited | Private company limited by shares | Live |
| ec-heat Limited | | Live |
| E-Check Service Company Limited | | Live |
| eCheck-In Company Limited | Private company limited by shares | Live |
| ECHEERS HK COMPANY LIMITED | Private company limited by shares | Live |
| ECHELER LIMITED | Private company limited by shares | Live |
| ECHELON LIMITED | Private company limited by shares | Live |
| Echelon App Limited | | Live |
| Echem Incorporation Limited | Private company limited by shares | Live |
| ECHEM TECH LIMITED | Private company limited by shares | Live |
| Echemi Holding Company Limited | Private company limited by shares | Live |
| E-CHEMICAL (HONG KONG) LIMITED | Private company limited by shares | Live |
| HK Echen Limited | | Live |
| ECHEN TECH CO., LIMITED | Private company limited by shares | Live |
| ECHEN TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| Echen trading (HK) CO., Limited | Private company limited by shares | Live |
| HONGKONG ECHEN INDUSTRIAL LIMITED | | Live |
| Jiangxi Echen Industry Co., Limited | Private company limited by shares | Live |
| ECHEN INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ECHEN INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Live |
| E-CHEN INTERNATIONAL (HK) LIMITED | Private company limited by shares | Live |
| E-CHEN INTERNATIONAL (HK) HOLDING LIMITED | Private company limited by shares | Live |
| Echen Asia Pacific Limited | Private company limited by shares | Live |
| ECHEN SOURCING CO., LIMITED | | Live |
| ECHI INDUSTRIAL LIMITED | Private company limited by shares | Live |
| ECHI ASIA SHIPPING LIMITED | Private company limited by shares | Live |
| ECHI TRADING CO., LIMITED | Private company limited by shares | Live |
| E-CHIC ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| ECHIKEN HONG KONG LIMITED | Private company limited by shares | Live |
| ECHILIN (HONGKONG) LIMITED | Private company limited by shares | Live |
| E-CHINA COMPANY LIMITED | Private company limited by shares | Dissolved |
| e-China Limited | Private company limited by shares | Live |
| e-China (Asia) Company Limited | Private company limited by shares | Live |
| ECHINA24 CO., LIMITED | Private company limited by shares | Live |
| E-CHINA-B2B.COM LIMITED | Private company limited by shares | Dissolved |
| eChinaCash (China) Limited | Private company limited by shares | Dissolved |
| eChinaDeal Limited | Private company limited by shares | Dissolved |
| E-CHINASOURCING.COM LIMITED | Private company limited by shares | Live |
| ECHINE LIMITED | Private company limited by shares | Live |
| ECHINESEOPERA.COM LIMITED | Private company limited by shares | Dissolved |
| ECHINUS COMPANY LIMITED | Private company limited by shares | Dissolved |
| E-CHIP LIMITED | Private company limited by shares | Dissolved |
| HK E-CHIP CO., LIMITED | Private company limited by shares | Dissolved |
| ECHIP TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ECHIPMICRO CO., LIMITED | Private company limited by shares | Live |
| E-Chips Solution Co., Limited | Private company limited by shares | Live |
| E-CHIPS TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| ECHKO LIMITED | Private company limited by shares | Live |
| ECHLIN CHINA LIMITED | Private company limited by shares | Dissolved |
| Echlyer Limited | Private company limited by shares | Live |
| HONG KONG MODERN C BIOSCIENCE ECHNOLOGY LIMITED | | Live |
| HK MONHON ECHNOLOGY LIMITED | | Live |
| HK OCYALA ECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| HK SIRENT ECHNOLOGY LIMITED | Private company limited by shares | Live |
| ECHO SEA LIMITED | Private company limited by shares | Dissolved |
| ECHO SKY LIMITED | Private company limited by shares | Dissolved |
| ECHO TOP LIMITED | Private company limited by shares | Dissolved |
| ECHO LIMITED | Private company limited by shares | Dissolved |
| ECHO NET LIMITED | Private company limited by shares | Dissolved |
| ECHO LIMITED | Private company limited by shares | Live |
| TOP ECHO LIMITED | Private company limited by shares | Live |
| NEW ECHO LIMITED | Private company limited by shares | Live |
| ECHO TOP LIMITED | Private company limited by shares | Dissolved |
| ECHO RAY LIMITED | Private company limited by shares | Live |
| JOY ECHO LIMITED | Private company limited by shares | Live |
| KEY ECHO LIMITED | Private company limited by shares | Live |
| BIG ECHO LIMITED | Private company limited by shares | Live |
| Echo Pro Limited | Private company limited by shares | Live |
| ECHO LIMITED | Private company limited by shares | Live |
| ECHO MAX LIMITED | Private company limited by shares | Live |
| ECHO & ECHO LIMITED | Private company limited by shares | Live |
| SEA ECHO LIMITED | Private company limited by shares | Live |
| HK ECHO LIMITED | Private company limited by shares | Live |
| Echo FX Limited | | Live |
| DRAGON ECHO LIMITED | Private company limited by shares | Dissolved |
| FIRST ECHO LIMITED | Private company limited by shares | Dissolved |
| GRAND ECHO LIMITED | Private company limited by shares | Live |
| Lico Echo Investment Limited | Private company limited by shares | Live |
| EASTERN ECHO TRADING LIMITED | Private company limited by shares | Dissolved |
| Winning Echo Limited | Private company limited by shares | Live |
| WISDOM ECHO LIMITED | Private company limited by shares | Live |
| Echo5 Limited | Private company limited by shares | Live |
| EchoBond Limited | Private company limited by shares | Dissolved |
| Echobox Limited | Private company limited by shares | Live |
| ECHOCARDIOGRAPHY (HONG KONG) LIMITED | Company limited by guarantee | Live |
| COLOUR-DOPPLER ECHOCARDIOGRAPHY LABORATORY LIMITED | Private company limited by shares | Dissolved |