| Tianhe Environmental Technology Limited | | Live |
| HK TIANNING ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| T-SHINE ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| TUNG HIP ENVIRONMENTAL TECHNOLOGY LIMITED | | Live |
| TWINKLE ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UPSTAR ENVIRONMENTAL TECHNOLOGY CO., LIMITED | | Live |
| VITREO ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Plenty Wealth Environmental Technology Limited | Private company limited by shares | Live |
| Wego Environmental Technology Limited | Private company limited by shares | Dissolved |
| Well Clean Environmental Technology Limited | Private company limited by shares | Live |
| WINDSOR ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| WING TAI ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Wintex Environmental Technology Limited | Private company limited by shares | Live |
| HK XUNYAN ENVIRONMENTAL TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| YIWAN Environmental Technology (HK) Limited | | Live |
| Youcheng Environmental Technology (Hong Kong) Limited | | Live |
| Yuzhang Environmental Technology Co. , Limited | Private company limited by shares | Live |
| Zhanda Environmental Technology (Hong Kong) Limited | Private company limited by shares | Live |
| ZHONGGANG ENVIRONMENTAL TECHNOLOGY (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| HANWANG ZHONGXING ENVIRONMENTAL TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| TELFORD ENVIRONMENTAL RESOURCE LIMITED | Private company limited by shares | Live |
| TELFORD ENVIRONMENTAL SERVICE LIMITED | Private company limited by shares | Live |
| TERESA ENVIRONMENTAL (HOLDING) GROUP COMPANY, LIMITED | Private company limited by shares | Dissolved |
| TERS ENVIRONMENTAL (HOLDING) GROUP COMPANY, LIMITED | Private company limited by shares | Live |
| TESCO ENVIRONMENTAL PROTECTION (HK) CO., LIMITED | Private company limited by shares | Live |
| Tesselaar Environmental Solutions (HK) Limited | Private company limited by shares | Dissolved |
| Tesseract Environmental Group Limited | Private company limited by shares | Live |
| ASIA PACIFIC ENVIRONMENTAL TESTING COMPANY LIMITED | Private company limited by shares | Live |
| QUALITY ENVIRONMENTAL CERTIFICATION TESTING (CENTER) LIMITED | Private company limited by shares | Dissolved |
| Vibration and Environmental Testing Company Limited | Private company limited by shares | Live |
| KONG THAI (ASIA) ENVIRONMENTAL TRADING COMPANY LIMITED | Private company limited by shares | Live |
| TIANE ENVIRONMENTAL CO., LIMITED | Private company limited by shares | Live |
| Yorkshire Environmental Timber Limited | Private company limited by shares | Live |
| TioStone Environmental Limited | Private company limited by shares | Live |
| TONGJIANG ENVIRONMENTAL CO., LIMITED | Private company limited by shares | Dissolved |
| TOPARCH ENVIRONMENTAL PROTECTION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| HON MAN ENVIRONMENTAL TRADING COMPANY LIMITED | Private company limited by shares | Live |
| JIA HUA ENVIRONMENTAL TRADING LIMITED | | Live |
| HAO SI ENVIRONMENTAL TRADING LIMITED | | Live |
| ENVIRONMENTAL DRAGON TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| ENVIRONMENTAL MASTER INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| Ying Tat Metal Plastic Environmental Trading Company Limited | Private company limited by shares | Live |
| Li Yuen Environmental Trading Company Limited | | Live |
| QUALITY & ENVIRONMENTAL CERTIFICATION TRAINING LIMITED | Private company limited by shares | Dissolved |
| Yee Kee Environmental Transport Limited | Private company limited by shares | Live |
| Yiu Kee Environmental Transportation Limited | Private company limited by shares | Live |
| Ming Lee Environmental Transportation Co. Limited | Private company limited by shares | Live |
| Fu Tong Environmental Treatment Limited | Private company limited by shares | Live |
| Trigger Environmental Biological Technology Limited | Private company limited by shares | Dissolved |
| New Trillion Environmental Limited | Private company limited by shares | Live |
| TRINITY-ADVANCE (ENVIRONMENTAL) LIMITED | Private company limited by shares | Dissolved |
| TRUSTY ENVIRONMENTAL CO. LIMITED | Private company limited by shares | Live |
| SAI KUNG TSEUNG KWAN O ENVIRONMENTAL ASSOCIATION LIMITED | Company limited by guarantee | Live |
| TSUENYE ENVIRONMENTAL LIMITED | Private company limited by shares | Dissolved |
| Lik Tung Environmental Company Limited | Private company limited by shares | Live |
| TUNG KONG ENVIRONMENTAL LIMITED | Private company limited by shares | Live |
| U-BORNE ENVIRONMENTAL LIMITED | Private company limited by shares | Live |
| Ultimate Environmental Equipment Limited | Private company limited by shares | Live |
| ULTRA CLEAN ENVIRONMENTAL PROTECTION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNIPURE ENVIRONMENTAL LIMITED | Private company limited by shares | Live |
| UNITED ENVIRONMENTAL COMPANY LIMITED | Private company limited by shares | Live |
| GLORY UNITED ENVIRONMENTAL CLEANING CO., LIMITED | Private company limited by shares | Dissolved |
| UNITED ENVIRONMENTAL ENGINEERS LIMITED | Private company limited by shares | Dissolved |
| UNITED ENVIRONMENTAL NETWORK, INC. LIMITED | Private company limited by shares | Dissolved |
| UNITED VICTORY ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL ENVIRONMENTAL ENGINEERING CO., LIMITED | Private company limited by shares | Live |
| UNIVERSAL ENVIRONMENTAL ENTERPRISE LIMITED | Private company limited by shares | Live |
| UNIVERSAL ENVIRONMENTAL ENTERPRISE LIMITED | Private company limited by shares | Live |
| Universal Environmental Technology Limited | Private company limited by shares | Live |
| Universal Environmental Technology China Limited | Private company limited by shares | Live |
| VABELLA ENVIRONMENTAL PARTNERS LIMITED | Private company limited by shares | Live |
| ZHONGXING VANNEX ENVIRONMENTAL PROTECTION LIMITED | Private company limited by shares | Live |
| VASPLEX MOTOR ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| VAST WISDOM ENVIRONMENTAL LIMITED | Private company limited by shares | Dissolved |
| Vastsources Environmental Limited | Private company limited by shares | Live |
| VERDE ENVIRONMENTAL INTERNATIONAL CORPORATION LIMITED | Private company limited by shares | Dissolved |
| VESON ENVIRONMENTAL EQUIPMENT LIMITED | Private company limited by shares | Live |
| VIRIDIS ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| VISION ENVIRONMENTAL LIMITED | Private company limited by shares | Live |
| Vision Environmental H.K Limited | | Live |
| Wack Environmental Consulting Limited | Private company limited by shares | Live |
| CHINA WANCI ENVIRONMENTAL GROUP LIMITED | Private company limited by shares | Live |
| WANDX Environmental HK Limited | | Live |
| Wang Yuen Environmental Company Limited | Private company limited by shares | Dissolved |
| Waste & Environmental Consultancy Limited | Private company limited by shares | Live |
| ENVIRONMENTAL WASTE MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| ENVIRONMENTAL WASTE SOLUTIONS INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| WATFIELD ENVIRONMENTAL LIMITED | Private company limited by shares | Live |
| WATSON ENVIRONMENTAL MANAGEMENT LIMITED | Private company limited by shares | Live |
| ECO WAVE ENVIRONMENTAL HK LIMITED | Private company limited by shares | Dissolved |
| WELL TEAM ENVIRONMENTAL COMPANY LIMITED | Private company limited by shares | Live |
| RABBIT WHITE Environmental Quality Management Co Limited | Private company limited by shares | Live |
| WING KAY ENVIRONMENTAL LIMITED | Private company limited by shares | Live |
| Wing Lei Environmental Limited | | Live |
| Wing Ming Environmental Limited | Private company limited by shares | Live |
| Winpack Environmental Limited | Private company limited by shares | Live |
| WONDERFUL ENVIRONMENTAL TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| NRG ENVIRONMENTAL WORKS COMPANY LIMITED | Private company limited by shares | Dissolved |
| WORLDCO ENVIRONMENTAL LIMITED | Private company limited by shares | Dissolved |
| XIANAIER ENVIRONMENTAL PROTECTION TECHNOLOGY GROUP LIMITED | Private company limited by shares | Live |