| ZIAY ECO-TECH GROUP LIMITED | Private company limited by shares | Live |
| ECOTECHMINERALS LIMITED | Private company limited by shares | Live |
| ECOTECHNO HK LIMITED | Private company limited by shares | Live |
| Sky Eco-Technologies Limited | Private company limited by shares | Live |
| Aqua Clean Ecotechnology Limited | Private company limited by shares | Live |
| GLORY ECO-TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| Hkwctt Eco-technology Limited | Private company limited by shares | Live |
| Hoi Wah Ecotechnology & Innovation Co Limited | | Live |
| Fujian Minsan Eco-technology Co., Limited | Private company limited by shares | Live |
| AI Smart Eco-technology Limited | Private company limited by shares | Live |
| ABi ECOTECHNOLOGY TECNA LIMITED | Private company limited by shares | Live |
| ECOteh Service Limited | Private company limited by shares | Live |
| ECO-TEK COMPANY LIMITED | Private company limited by shares | Live |
| MW ECOTEK LIMITED | Private company limited by shares | Live |
| Ecotek Investment Co., Limited | Private company limited by shares | Dissolved |
| ECOTEK MULTIMEDIA LIMITED | Private company limited by shares | Live |
| ECOTEK TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ECO-TELECOM LIMITED | Private company limited by shares | Live |
| EcoTerrace Trading & Service Limited | | Live |
| ECOTEX LIMITED | Private company limited by shares | Live |
| ECOTEX APPAREL LIMITED | Private company limited by shares | Live |
| ECOTEX INDUSTRIAL LIMITED | Private company limited by shares | Live |
| ECO-TEX INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ECOTEX INTERNATIONAL FASHION ACCESSORIES CO., LIMITED | Private company limited by shares | Live |
| ECOTEX INTERNATIONAL (HONG KONG) LIMITED | Private company limited by shares | Live |
| ECOTEX INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Live |
| ECOTEXTIL COMPANY LIMITED | | Live |
| HK CHENYUAN ECO-TEXTILE LIMITED | Private company limited by shares | Dissolved |
| HK WANMEI INT'L GROUP (ECO-TEXTILE) LIMITED | Private company limited by shares | Live |
| HK PINYAN INT'L GROUP (ECO-TEXTILE) LIMITED | Private company limited by shares | Live |
| EcoTimber Limited | | Live |
| Ecotonics Company Limited | Private company limited by shares | Dissolved |
| HONGKONG INTERNATIONAL ECOTOPE RESEARCH INSTITUTE CO., LIMITED | Private company limited by shares | Live |
| Ecotopia Limited | Private company limited by shares | Live |
| Ecotopia Consulting Limited | Private company limited by shares | Live |
| ECO-TORCH COMPANY LIMITED | Private company limited by shares | Live |
| HAPPY ECOTOUR LIMITED | Private company limited by shares | Live |
| ECOTOUR TRAVEL LIMITED | Private company limited by shares | Live |
| China Ecotourism Limited | Private company limited by shares | Live |
| China Ecotourism Group Limited | Private company limited by shares | Live |
| WUHUASHAN ECO-TOURISM LIMITED | | Live |
| ECOTRA ASIA PACIFIC LIMITED | Private company limited by shares | Dissolved |
| ECO-TRADE LIMITED | Private company limited by shares | Live |
| ECO-TRADING (H.K.) COMPANY LIMITED | Private company limited by shares | Dissolved |
| Ecotrend Limited | Private company limited by shares | Live |
| ECOTRIM HONG KONG LIMITED | Private company limited by shares | Live |
| Ecotron HK Limited | | Live |
| ECOTRON SCIENTIFIC LIMITED | Private company limited by shares | Live |
| Ecotronics Limited | Private company limited by shares | Live |
| ECOTRONIX ASIA INDUSTRIES LIMITED | Private company limited by shares | Live |
| ECOTROPIC VINTAGEERING LIMITED | Private company limited by shares | Dissolved |
| Ecotropolis Limited | Private company limited by shares | Live |
| ECOTS (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| Ecotutto Environmental Tech Limited | | Live |
| ECOUNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| E.COUNTRY LIMITED | Private company limited by shares | Live |
| E-coupon Limited | Private company limited by shares | Live |
| ECOUTER LIMITED | Private company limited by shares | Live Commenced dormancy on 12-Feb-2016 |
| EcoVadis Hong Kong Limited | Private company limited by shares | Live |
| CHAODA ECOVEG (HK) LIMITED | Private company limited by shares | Live |
| ECOVENT INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ECOVER ASIA LIMITED | Private company limited by shares | Live |
| ECOVERSE LIMITED | Private company limited by shares | Dissolved |
| ECOVERT LIMITED | Private company limited by shares | Live |
| Ecovestment Limited | Private company limited by shares | Dissolved |
| ECOVIC ELECTRONICS LIMITED | Private company limited by shares | Live |
| Ecovida Online Limited | Private company limited by shares | Live |
| ECOVILLE LIMITED | Private company limited by shares | Dissolved |
| ECOVIS Axial CPA Limited | Private company limited by shares | Live |
| ECOVIS (CHINA) LIMITED | Private company limited by shares | Dissolved |
| ECOVIS FOCUS HONG KONG CPA LIMITED | Private company limited by shares | Live |
| ECOVIS SECRETARIES (H.K.) LIMITED | Private company limited by shares | Live |
| ECOVISION LIMITED | Private company limited by shares | Dissolved |
| ECO-VISION (CHARITY) LIMITED | Company limited by guarantee | Live |
| Ecoviva Holdings Limited | | Live |
| Ecovoltage International Limited | Private company limited by shares | Live |
| ECOWARDS LIMITED | Private company limited by shares | Live |
| ECOWARE GROUPS LIMITED | Private company limited by shares | Dissolved |
| Ecoware Technology Limited | Private company limited by shares | Live |
| Ecowarm Technology Company Limited | Private company limited by shares | Live |
| ECO-WASTE COMPANY LIMITED | Private company limited by shares | Live |
| Eco-Way Limited | Private company limited by shares | Live |
| ECOWELL LIMITED | Private company limited by shares | Live |
| ECO-WELL BIOSCIENCE INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Live |
| Ecowell Purification Company Limited | Private company limited by shares | Live |
| ECOWIN DISTRIBUTION HONG KONG COMPANY LIMITED | Private company limited by shares | Live |
| ECOWIN INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| Ecowin International Limited | | Live |
| Ecowin Management Limited | | Live |
| ECOWINS SCIENCE & TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| ECOWOOD ENTERPRISE CO., LIMITED | Private company limited by shares | Live |
| MODERNISTIC ECO-WOOD LIMITED | Private company limited by shares | Live |
| ECOWORLD COMPANY LIMITED | Private company limited by shares | Live |
| Ecoworld Limited | | Live |
| ECO-WORLD (CHINA-HK) LIMITED | Private company limited by shares | Dissolved |
| ECOX LIMITED | Private company limited by shares | Dissolved |
| EcoXchange Limited | Private company limited by shares | Dissolved |
| Red Ecoya Limited | Private company limited by shares | Live |
| ECOZINE LIMITED | Private company limited by shares | Live |
| Ecozippers Limited | Private company limited by shares | Live Commenced dormancy on 16-Aug-2010 |