| GREATER BAY AREA ECOTECH (GROUP) LIMITED | Private company limited by shares | Live |
| KENNETH ECOTECH GROUP LIMITED | Private company limited by shares | Live |
| EcoTech Pacific Group Limited | Private company limited by shares | Live |
| Wiselife EcoTech Group Limited | Private company limited by shares | Live |
| KQ ECO-TECH (GUANG DONG) COMPANY LIMITED | Private company limited by shares | Live |
| Guangzhou Umeier Ecotech Co., Limited | | Live |
| ECOTECH HEALTHCARE LIMITED | Private company limited by shares | Dissolved |
| ECOTECH (HK) LIMITED | Private company limited by shares | Live |
| HNA ECOTECH (HK) CO. LIMITED | Private company limited by shares | Live |
| ECOTECH AIR-CONDITIONING (HK) LIMITED | Private company limited by shares | Live |
| BESURE (HK) ECOTECH CO., LIMITED | Private company limited by shares | Live |
| GLORY (HK) ECOTECH LIMITED | Private company limited by shares | Live |
| N.S.B.D. iFactors Eco-Tech (HK) Limited | Private company limited by shares | Dissolved |
| EcoTech (HK) EnviroProtect Technology Limited | | Live |
| INNOVATIVE ECO-TECH AND ENERGY (HOLDINGS) LIMITED | Private company limited by shares | Dissolved |
| Global Ecotech Holdings Group Limited | Private company limited by shares | Live |
| HONG TAI ECOTECH COMPANY LIMITED | Private company limited by shares | Live |
| HONG KONG ECOTECH LIMITED | Private company limited by shares | Live |
| MG EcoTech (Hong Kong) Limited | Private company limited by shares | Dissolved |
| DGI ECO-TECH (HONG KONG) LIMITED | Private company limited by shares | Live |
| Styx Ecotech (Hong Kong) Limited | | Live |
| HONGKONG WING FUNG ECO-TECH COMPANY LIMITED | Private company limited by shares | Live |
| Hydro Ecotech Limited | Private company limited by shares | Live |
| ECOTECH INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| Eco-Tech Industries (International) Limited | Private company limited by shares | Live |
| Ecotech Industry Limited | Private company limited by shares | Live |
| INHOYA ECOTECH CO., LIMITED | Private company limited by shares | Live |
| INNOVA ECOTECH INDUSTRIAL LIMITED | Private company limited by shares | Live |
| ECOTECH INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Bonsin Eco-tech International Limited | Private company limited by shares | Dissolved |
| EARTHCARE ECOTECH INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ECOTECH INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| ECOTECH INTERNATIONAL (H.K.) LIMITED | Private company limited by shares | Dissolved |
| INFINIERGY ECOTECH INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ECOTECH REGENERGY INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| EcoTech International Science & Technology Limited | Private company limited by shares | Live |
| THERMALIN INTERNATIONAL ECOTECH LIMITED | Private company limited by shares | Dissolved |
| ECOTECH INVESTMENT LIMITED | Private company limited by shares | Live |
| JAPAN ECOTECH LIMITED | Private company limited by shares | Live |
| JIALONG ECO-TECH DEVELOPMENT CO., LIMITED | Private company limited by shares | Dissolved |
| TIM WAI ECOTECH J.V. FOOD WASTE TREATMENT SERVICES LIMITED | Private company limited by shares | Dissolved |
| KAICHENG ECO-TECH (ASIA) COMPANY LIMITED | Private company limited by shares | Live |
| ECOTECH LIGHTING SOLUTION LIMITED | Private company limited by shares | Live |
| ECOTECH NEW MATERIAL CO., LIMITED | Private company limited by shares | Live |
| ECOTECH MATERIALS CO., LIMITED | Private company limited by shares | Live |
| CHUNG WAH METAL ECO-TECH CO. LIMITED | Private company limited by shares | Live |
| Ecotech Optical HK Limited | | Live |
| ECOTECH PACIFIC LIMITED | Private company limited by shares | Dissolved |
| PACIFIC ECOTECH LIMITED | Private company limited by shares | Live |
| ECOTECH PLASTIC OIL LIMITED | Private company limited by shares | Dissolved |
| POLYMER ECO-TECH LIMITED | Private company limited by shares | Live |
| EcoTech Polymers Hong Kong Limited | Private company limited by shares | Live |
| ECOTECH RECYCLING LIMITED | Private company limited by shares | Live |
| OCEAN RESOURCE ECOTECH LIMITED | Private company limited by shares | Live |
| Sagacity Eco-Tech Co. Limited | Private company limited by shares | Live Commenced dormancy on 30-Mar-2016 |
| EcoTech Smart Limited | | Live |
| ECOTECH SOLUTIONS LIMITED | Private company limited by shares | Live |
| ECO-TECH SOLUTIONS LIMITED | | Live |
| Spring Fil Eco-Tech Company Limited | Private company limited by shares | Live |
| SPRING ECO-TECH LIMITED | Private company limited by shares | Live |
| ECOTECH PET STRAP LIMITED | Private company limited by shares | Live |
| SUNLIGHT ECO-TECH LIMITED | Private company limited by shares | Live |
| Surforce (Eco-tech) Limited | Private company limited by shares | Dissolved |
| SYNERJY ECOTECH CO., LIMITED | Private company limited by shares | Live |
| TENYE ECO-TECH CO., LIMITED | Private company limited by shares | Live |
| ECOTECH TRADING LIMITED | Private company limited by shares | Dissolved |
| ECOTECH (POTABLE WATER PIPE CLEANING) CO. LIMITED | Private company limited by shares | Dissolved |
| WISDOM ECO-TECH LIMITED | Private company limited by shares | Dissolved |
| WISE ECOTECH LIMITED | Private company limited by shares | Live |
| ECOTECH WORLDWIDE LIMITED | Private company limited by shares | Dissolved |
| FAN XIANG ECO-TECH COMPANY LIMITED | Private company limited by shares | Live |
| 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 |