| 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 |