| YONG XU DAO ECO-SUSTAINABLE SOLUTIONS LIMITED | Private company limited by shares | Live |
| ECOSWAY GREEN LIMITED | Private company limited by shares | Dissolved |
| eCosway.com (HK) Limited | Private company limited by shares | Live |
| WI ECOSYS CO LIMITED | Private company limited by shares | Live |
| Eco-Sys Action Foundation Limited | Company limited by guarantee | Live |
| ECO-SYS BIOLOGY SCI-TEC COMPANY LIMITED | Private company limited by shares | Live |
| HMB ECOSYS, CO., LIMITED | Private company limited by shares | Live |
| Ecosys Technology Limited | Private company limited by shares | Live |
| CCE ECOSYSTEM LIMITED | Private company limited by shares | Live |
| COL ECOSYSTEM LIMITED | Private company limited by shares | Live |
| ARM Innovation Ecosystem Accelerator Limited | Private company limited by shares | Live |
| AGRIAQUA ECOSYSTEM BIOTEC CHINA COMPANY LIMITED | Private company limited by shares | Dissolved |
| Artistic Ecosystem Limited | | Live |
| Beauty EcoSystem HK Limited | Private company limited by shares | Live |
| Blueshark Ecosystem Limited | | Live |
| Fingers Encrypto Ecosystem Limited | Private company limited by shares | Live |
| HK ECOSYSTEM FISH FARMING LIMITED | Private company limited by shares | Live |
| GLOBE ENERGY ECO-SYSTEM (ASIA) LIMITED | Private company limited by shares | Dissolved |
| HK RAISING HEALTH ECOSYSTEM & RESEARCH ASSOCIATION LIMITED | Private company limited by shares | Dissolved |
| ECOSYSTEM (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UFO Eco-system (Hong Kong) Limited | Private company limited by shares | Live |
| iAuto Ecosystem Limited | Private company limited by shares | Live |
| FIRST ECOSYSTEM BIOTEC INT'L GROUP LIMITED | Private company limited by shares | Dissolved |
| Makers Ecosystem Limited | Private company limited by shares | Live |
| Ecosystem Management Limited | Private company limited by shares | Live |
| China Ecosystem New Material Co., Limited | Private company limited by shares | Live |
| Hash Rate Ecosystem Limited | Private company limited by shares | Live |
| ROBOTOU ECOSYSTEM COMPANY LIMITED | Private company limited by shares | Live |
| Shunwei Ecosystem (Hong Kong) Limited | Private company limited by shares | Live |
| ETH Smart Contract Tech Ecosystem Limited | Private company limited by shares | Live |
| BIA ECOSYSTEM TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Static Valley Ecosystem Limited | | Live |
| WEALTH ECOSYSTEM LIMITED | | Live |
| ECOSYSTEMS LIMITED | Private company limited by shares | Live |
| LED ECOSYSTEMS LIMITED | Private company limited by shares | Dissolved |
| Digital Ecosystems Group Limited | | Live |
| HDDE Health Devices & Data Ecosystems Limited | Private company limited by shares | Live |
| HONG KONG CLEANTECH ECOSYSTEMS GROUP LIMITED | Private company limited by shares | Live |
| Idea Ecosystems Limited | Private company limited by shares | Live |
| Signature EcoSystems Technologies Limited | Private company limited by shares | Live |
| Tektos Ecosystems Limited | Private company limited by shares | Live |
| AUSTRALIA ECOT GROUP (CHINA) HOLDING LIMITED | Private company limited by shares | Dissolved |
| ECOT Technology Inc. Limited | Private company limited by shares | Live |
| ECOTEC LIMITED | Private company limited by shares | Dissolved |
| ECOTEC LIMITED | Private company limited by shares | Live |
| ECOTEC HK LIMITED | Private company limited by shares | Live |
| ECOTEC ASIA LIMITED | Private company limited by shares | Dissolved |
| ECO-TEC NONWOVEN LIMITED | Private company limited by shares | Live |
| EcoTec Projects Limited | Private company limited by shares | Live |
| Ecotec Resources Limited | | Live |
| ECOTEC TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ECO-TECH CO. LIMITED | Private company limited by shares | Dissolved |
| ECOTECH LIMITED | Private company limited by shares | Dissolved |
| ECOTECH LIMITED | Private company limited by shares | Live |
| Ecotech GP Limited | Private company limited by shares | Live |
| PBM ECOTECH HK LIMITED | Private company limited by shares | Live |
| 3G Ecotech Limited | Private company limited by shares | Live |
| ECOTECH ALLIANCE LIMITED | Private company limited by shares | Live |
| ALLIANCE ECO-TECH LIMITED | Private company limited by shares | Live |
| GREEN ALLIANCE ECOTECH LIMITED | Private company limited by shares | Live |
| Aurum Eco-Tech Limited | Private company limited by shares | Live |
| Juyuan Auto Ecotech (Hongkong) Limited | Private company limited by shares | Live |
| Baguio EcoTech Limited | Private company limited by shares | Live |
| ECOTECH DESIGN BUILD.ASIA LIMITED | Private company limited by shares | Live |
| ECOTECH BUILDING MATERIAL LIMITED | | Live |
| Carrier Eco-tech Company Limited | Private company limited by shares | Live |
| ECOTECH CHEMICAL (H.K.) LIMITED | Private company limited by shares | Live |
| ECOTECH CHINA LIMITED | Private company limited by shares | Live |
| CHINA ECOTECH LIMITED | Private company limited by shares | Live |
| CHNNO CHINA ECO-TECH LIMITED | Private company limited by shares | Dissolved |
| BORIT ECOTECH CO., LIMITED | Private company limited by shares | Live |
| Ecotech Electrical Co., Limited | Private company limited by shares | Live |
| GERMANY AQSEN ECOTECH CO., LIMITED | Private company limited by shares | Live |
| NINGBO GREENVIRO ECOTECH CO., LIMITED | Private company limited by shares | Live |
| SUNSEMI ECOTECH CO., LIMITED | Private company limited by shares | Live |
| ECOTECH AND CONCEPTS LIMITED | Private company limited by shares | Live |
| Ecotech And Concepts Construction Limited | | Live |
| ECOTECH CORPORATION LIMITED | Private company limited by shares | Live |
| EcoTech Creative Company Limited | Private company limited by shares | Live |
| ECOTECH DEVELOPMENT COMPANY LIMITED | Private company limited by shares | Live |
| ECOTECH CHINA DISTRIBUTION LIMITED | Private company limited by shares | Live |
| ECOTECH ELECTRONICS TEC CO., LIMITED | Private company limited by shares | Live |
| ECOTECH Refrigeration & Energy Systems HKG Limited | Private company limited by shares | Dissolved |
| ECOTECH ENGINEERING LIMITED | Private company limited by shares | Live |
| ECOTECH ARCHITECTURAL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| EcoTech System Engineering Limited | | Live |
| Ecotech Environment Limited | Private company limited by shares | Live |
| EcoTech Environment Management Limited | Private company limited by shares | Live |
| EcoTech Environmental Limited | | Live |
| ECOTECH ENVIRONMENTAL PROTECTION (HONG KONG) LIMITED | Private company limited by shares | Live |
| Ecotech Environmental Technology Limited | Private company limited by shares | Live |
| EVERGAIN ECO-TECH LIMITED | Private company limited by shares | Dissolved |
| Fian Eco-Tech Limited | Private company limited by shares | Live |
| WIN GLORY ECO-TECH LIMITED | Private company limited by shares | Live |
| Gobi EcoTech Limited | Private company limited by shares | Dissolved |
| GREEN ECO-TECH SOLUTIONS LIMITED | Private company limited by shares | Live |
| GreeN-able Ecotech Limited | | Live |
| GreenGood Eco-Tech Co. Limited | Private company limited by shares | Live |
| ECOTECH GROUP LIMITED | Private company limited by shares | Dissolved |
| AGERANI ECOTECH GROUP LIMITED | Private company limited by shares | Live |