| Ecoponics (Hong Kong) Limited | Private company limited by shares | Live |
| EcoPort Limited | Private company limited by shares | Live |
| EcoPower Healthcare Limited | Private company limited by shares | Live |
| ECOPOZ INTERNATIONAL LIMITED | Private company limited by shares | Live |
| EcoPro Company Limited | Private company limited by shares | Live |
| EcoPro Limited | Private company limited by shares | Live |
| ECOPRO INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Live |
| ECO-PRO TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Eco-Pro Seperation Technology Limited | Private company limited by shares | Live |
| YAMANO ECO-PRO TECHNOLOGY CO LIMITED | Private company limited by shares | Dissolved |
| FORTUNE ECO-PRODUCTS CO., LIMITED | Private company limited by shares | Live |
| GLOBAL ECO-PRODUCTS FOUNDATION LIMITED | Private company limited by shares | Dissolved |
| GLOBAL ECO-PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| H.K. Orient Success Eco-Products Co., Limited | Private company limited by shares | Live |
| YANYAN ECO-PRODUCTS LIMITED | Private company limited by shares | Live |
| ECO-PROPERTY LIMITED | Private company limited by shares | Dissolved |
| Ecopropp Limited | Private company limited by shares | Dissolved |
| ECOPTICAL COMMUNICATION CO., LIMITED | Private company limited by shares | Dissolved |
| Ecoptical Micro Trading Co., Limited | Private company limited by shares | Live |
| ECORAIN SYSTEMS LIMITED | Private company limited by shares | Live |
| ECORAL LIMITED | Private company limited by shares | Live |
| ECO-RAMA LIMITED | Private company limited by shares | Live |
| ECORATE LIMITED | Private company limited by shares | Dissolved |
| eCorbetti Limited | Private company limited by shares | Dissolved |
| ECOrbit Technology Limited | | Live |
| E-Cord Limited | Private company limited by shares | Live |
| E-CORE AUDIO LIMITED | Private company limited by shares | Dissolved |
| Ecore (HK) Integrated Circuit Co., Limited | Private company limited by shares | Live |
| E-CORE COMPONENT CO., LIMITED | Private company limited by shares | Live |
| ECORE ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| ECORE MICRO ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| E-CORE ELECTRONICS INDUSTRY (HK) LIMITED | Private company limited by shares | Dissolved |
| ECORE GLOBAL TECHNOLOGY (HONGKONG) COMPANY LIMITED | Private company limited by shares | Live |
| GRAND ECORE COMPANY LIMITED | Private company limited by shares | Dissolved |
| E-CORE (HK) LIMITED | Private company limited by shares | Live |
| ECORE ELECTRIC (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| HONG KONG ECORE TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| ECORE PACKING CO., LIMITED | Private company limited by shares | Live |
| E-CORE TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| Ecore Technology Co., Limited | Private company limited by shares | Live |
| ECORE TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Live |
| Ecore Trade Limited | Private company limited by shares | Live |
| ECO-RECYCLE HOLDING LIMITED | Private company limited by shares | Live |
| EcoRenew Limited | Private company limited by shares | Dissolved |
| ECORESEARCH LIMITED | Private company limited by shares | Live |
| EcoResort Investments Limited | Private company limited by shares | Live |
| ECORESORTS LIMITED | Private company limited by shares | Live |
| Eco-Resource Supplies Limited | Private company limited by shares | Live |
| Eco-Rich Limited | Private company limited by shares | Live |
| Eco-Riders HK Limited | Company limited by guarantee | Live |
| EC-ORIGEM LIMITED | Private company limited by shares | Live |
| ECORIGINATE LIMITED | Private company limited by shares | Live |
| ECORN COMPANY LIMITED | Private company limited by shares | Dissolved |
| Ecorntech Hong Kong Limited | Private company limited by shares | Dissolved |
| Ecoroad Tyre Co., Limited | Private company limited by shares | Live |
| EcoRoo Limited | Private company limited by shares | Live |
| ECORP COMPANY LIMITED | Private company limited by shares | Dissolved |
| eCorp Limited | Private company limited by shares | Live |
| e-Corporate Services Limited | Private company limited by shares | Live |
| China Ecorun LED Lighting Co., Limited | Private company limited by shares | Live |
| ECOS LIMITED | Private company limited by shares | Dissolved |
| ECOS ECOS LIMITED | Private company limited by shares | Dissolved |
| E.C.O.S Limited | Private company limited by shares | Live |
| Ecosafe Asia Limited | Private company limited by shares | Live |
| ECOSAGE LIMITED | Private company limited by shares | Live |
| LED EcoSave Limited | Private company limited by shares | Live |
| NIPOVIO Eco-Science & Technology (Hong Kong) Limited | Private company limited by shares | Live |
| Ecosea Oil Limited | Private company limited by shares | Live |
| ECOSEB LIMITED | Private company limited by shares | Live |
| ECOSEC LIMITED | Private company limited by shares | Dissolved |
| ECOSEL HK LIMITED | | Live |
| ECOSELECTS LIMITED | Private company limited by shares | Dissolved |
| Ecosen Tech Industrial Co., Limited | | Live |
| ECOSERVE LIMITED | Private company limited by shares | Live |
| ECO-SERVE.COM LIMITED | Private company limited by shares | Dissolved |
| Special Trillions Eco-Service Engineering Limited | Private company limited by shares | Live |
| ECOSFERA LIMITED | Private company limited by shares | Dissolved |
| ECOSHINE LIGHTING COMPANY LIMITED | Private company limited by shares | Live |
| ECOSHINE TRADING LIMITED | | Live |
| ECO-SHOP LIMITED | Private company limited by shares | Dissolved |
| ECOSHOPPINGNET LIMITED | Private company limited by shares | Dissolved |
| ECOSI TECHNOLOGY LIMITED | | Live |
| ECO-SKY TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| Ecosky Engineering Limited | Private company limited by shares | Live |
| Ecosky International Limited | Private company limited by shares | Live |
| ECOSLAMP INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ecoSmart Limited | Private company limited by shares | Live |
| ECO-SMART GARDEN CO., LIMITED | Private company limited by shares | Dissolved |
| NEW ECO-Smart Machinery Co., Limited | Private company limited by shares | Live |
| EcoSmart Energy Investment Limited | Private company limited by shares | Live |
| EcoSmart Solar Engineering Limited | | Live |
| EcoSmart Green Charging Limited | | Live |
| EcoSmart Energy Group Limited | Private company limited by shares | Live |
| Eco-Smart Innovation Company Limited | Private company limited by shares | Live |
| EcoSmart Solar Investment Limited | Private company limited by shares | Live |
| EcoSmart Energy Management Limited | Private company limited by shares | Live |
| EcoSmart Renewable Energy Management Company Limited | Private company limited by shares | Live |
| EcoSmart Solar Management Limited | Private company limited by shares | Live |
| EcoSmart Solar Power Limited | Private company limited by shares | Live |
| EcoSmart Solar One Limited | | Live |