| Ecod Mech (HK) Co., Limited | | Live |
| ECODA LIMITED | Private company limited by shares | Dissolved |
| ECODA INVESTMENT LIMITED | Private company limited by shares | Live |
| ST. ECODALL SCIENCE CO., LIMITED | Private company limited by shares | Live |
| ECODESI LIMITED | Private company limited by shares | Live |
| EcoDesign Planning (Hong Kong) Limited | Private company limited by shares | Dissolved |
| CHINA ECODESIGN RESEARCH INSTITUTE CO., LIMITED | Private company limited by shares | Dissolved |
| H&F Eco-Development Limited | Private company limited by shares | Live |
| EASTKINGDOM ECO-DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| TEAMS ECO-DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| ECO-DISCOVERER LIMITED | Company limited by guarantee | Dissolved |
| ECODIVERS (HK) LIMITED | Private company limited by shares | Dissolved |
| HK ECODOM TRADING LIMITED | Private company limited by shares | Live |
| EcoDrive Hong Kong Limited | Company limited by guarantee | Live |
| ECODROP LIMITED | Private company limited by shares | Live |
| ECODU LIMITED | Private company limited by shares | Live |
| Eco-duck Company Limited | | Live |
| ECODY LIMITED | Private company limited by shares | Live |
| ECODYE INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| Ecodynamic Lab Limited | | Live |