| Tech Environmental Culture Company Limited | | Live |
| HK RONGYOU ENVIRONMENTAL TECH LIMITED | | Live |
| USA TOUAOSY ENVIRONMENTAL TECH LIMITED | Private company limited by shares | Live |
| ZHENGLONG ENVIRONMENTAL PRO TECH CO., LIMITED | | Live |
| Environmental Technica Limited | Private company limited by shares | Dissolved |
| ENVIRONMENTAL TECHNIQUES EU LIMITED | Private company limited by shares | Live |
| IWS ENVIRONMENTAL TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| ENVIRONMENTAL TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| HM ENVIRONMENTAL TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| CLS Environmental Technologies Limited | Private company limited by shares | Live |
| Advanced Environmental Technologies Limited | Private company limited by shares | Live |
| ASIA ENVIRONMENTAL TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| SUN AUSTRALIA (CHINA) ENVIRONMENTAL TECHNOLOGIES PTY LIMITED | Private company limited by shares | Live Commenced dormancy on 16-Jun-2014 |
| AuTec Environmental Technologies Limited | Private company limited by shares | Live |
| BECANCHI ENVIRONMENTAL SOLUTION TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| SINOTECH ENVIRONMENTAL TECHNOLOGIES CO., LIMITED | Private company limited by shares | Live |
| HM ENVIRONMENTAL TECHNOLOGIES (CONTRACTING) LIMITED | Private company limited by shares | Live |
| ENVIRONMENTAL TECHNOLOGIES INTERNATIONAL CORPORATION LIMITED | Private company limited by shares | Live |
| LEMI ENVIRONMENTAL TECHNOLOGIES CORPORATION LIMITED | Private company limited by shares | Dissolved |
| CYCLETECH ENVIRONMENTAL TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| ENPRO ENVIRONMENTAL TECHNOLOGIES CO. LIMITED | Private company limited by shares | Live |
| EVER VISION ENVIRONMENTAL TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| FOOK WOO ENVIRONMENTAL TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| Environmental Technologies Foundation Limited | Company limited by guarantee | Live |
| GLOBAL ENVIRONMENTAL TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| GLOBAL TECHNOLOGIES AND ENVIRONMENTAL COMPANY LIMITED | Private company limited by shares | Live |
| G.E.T. GLOBAL ENVIRONMENTAL TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| GOLD BOND ENVIRONMENTAL TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| GREEN ENVIRONMENTAL TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| FSE Environmental Technologies Group Limited | Private company limited by shares | Live |
| GUANG YI ENVIRONMENTAL TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| H2O3 ENVIRONMENTAL TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| Environmental Technologies (Hong Kong) Limited | Private company limited by shares | Live Commenced dormancy on 19-Aug-2008 |
| iQTek Environmental Technologies Limited | Private company limited by shares | Live |
| Kinghome Environmental Technologies Co., Limited | Private company limited by shares | Live |
| LEMI ENVIRONMENTAL TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| MANDRAKE ENVIRONMENTAL TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| NANOPAM ENVIRONMENTAL TECHNOLOGIES (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| ENVIRONMENTAL TECHNOLOGIES ASIA PACIFIC (H.K.) LIMITED | Private company limited by shares | Live |
| ROOTS ENVIRONMENTAL TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| Star Glory Environmental Technologies Limited | Private company limited by shares | Live |
| TEEMWAY ENVIRONMENTAL TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| WASTE & ENVIRONMENTAL TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| Waterdragon Environmental Technologies Limited | Private company limited by shares | Dissolved |
| ENVIRONMENTAL TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| CS ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| TFH ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| WAY WAY ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ETC ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| NVI ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| 3T ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| C & G ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| BGP ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| 3E ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| FIG ENVIRONMENTAL TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| ON MEI TAK ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| TOP Environmental Technology Limited | Private company limited by shares | Live |
| SUN ENVIRONMENTAL TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| MCL Environmental Technology Limited | Private company limited by shares | Live |
| VUN FAT ENVIRONMENTAL TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| MEG ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| H & H Environmental Technology Limited | Private company limited by shares | Dissolved |
| Environmental Technology Co. Limited | Private company limited by shares | Live |
| LMW ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| S U ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| P&T ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Eco Environmental Technology Company Limited | Private company limited by shares | Live |
| MBC Environmental Technology Limited | Private company limited by shares | Live |
| CHI WO ENVIRONMENTAL TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| JLN Environmental Technology Limited | Private company limited by shares | Live |
| RHT ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Uni Environmental Technology Limited | Private company limited by shares | Live |
| AP Environmental Technology Company Limited | Private company limited by shares | Live |
| CK ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| WS Environmental AI Technology Company Limited | Private company limited by shares | Live |
| HON WAI ENVIRONMENTAL TECHNOLOGY LIMITED | | Live |
| JM Environmental Technology Limited | | Live |
| Able Nice Environmental Technology Limited | Private company limited by shares | Live |
| ANRICH ENVIRONMENTAL TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| AOJIA ENVIRONMENTAL TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Live |
| Asia Environmental Electroplating Technology Limited | Private company limited by shares | Live |
| Roots Environmental Technology (Asia) Limited | Private company limited by shares | Live |
| atea Environmental Technology Pte Limited | Private company limited by shares | Dissolved |
| AXIOM ENVIRONMENTAL TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| BIO BEST ENVIRONMENTAL TECHNOLOGY (H.K.) LIMITED | Private company limited by shares | Dissolved |
| BIOLINK ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| BIOMAX ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Bohai Environmental technology (HK) Limited | Private company limited by shares | Live |
| B-RIVER ENVIRONMENTAL TECHNOLOGY (H.K.) LIMITED | Private company limited by shares | Live |
| Broadtec Environmental Technology Limited | Private company limited by shares | Live |
| HK Canfull ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| CANTON ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Carin Environmental Technology Group Company Limited | Private company limited by shares | Live |
| Win Champion Environmental Technology Limited | Private company limited by shares | Live |
| Charming Environmental Technology Limited | | Live |
| BGP ENVIRONMENTAL TECHNOLOGY (CHINA) LIMITED | Private company limited by shares | Live |
| BIO BEST ENVIRONMENTAL TECHNOLOGY (CHINA) LIMITED | Private company limited by shares | Dissolved |
| BOGO (CHINA) ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| CHINA ENVIRONMENTAL TECHNOLOGY GROUP CO., LIMITED | Private company limited by shares | Live |
| China Environmental Technology International Group Limited | | Live |