| ERV GROUP ENVIRONMENTAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| HAN CRESTBRIGHT ENVIRONMENTAL GROUP LIMITED | Private company limited by shares | Dissolved |
| HOMEWELL ENVIRONMENTAL GROUP LIMITED | Private company limited by shares | Dissolved |
| Honde Environmental Group Limited | Private company limited by shares | Live |
| ENVIRONMENTAL (HK) INVESTMENTS GROUP LIMITED | Private company limited by shares | Dissolved |
| ROOTS ENVIRONMENTAL GROUP LIMITED | Private company limited by shares | Live |
| Guangdong Canves Environmental Investment Company Limited | | Live |
| Guangzhou RKS Environmental Protection Science&Technology Co., Limited | Private company limited by shares | Live |
| Smart Guard Environmental Management Limited | Private company limited by shares | Live |
| ENVIRONMENTAL SUSTAINABILITY GUARDIAN LIMITED | | Live |
| GUOXIN ENVIRONMENTAL TREATMENT CO., LIMITED | Private company limited by shares | Dissolved |
| HANCHUN ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| TIN HANG ENVIRONMENTAL COMPANY LIMITED | Private company limited by shares | Live |
| HANGKONG HENGYU ENVIRONMENTAL PROTECTIONTECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| HANGZHOU SUPOR ENVIRONMENTAL PROTECTION SCI-TECH LIMITED | Private company limited by shares | Live |
| HANTANG ENVIRONMENTAL (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| HAPPY LAI ENVIRONMENTAL LIMITED | Private company limited by shares | Live |
| Happy-Running Environmental Technology Co., Limited | Private company limited by shares | Live |
| BIOSCIENCE ENVIRONMENTAL HEALTH INTERNATIONAL CO. LIMITED | Private company limited by shares | Dissolved |
| CHINA PUBLIC ENVIRONMENTAL HEALTH E-COMMERCE LIMITED | Private company limited by shares | Live |
| CHRISTIAN ENVIRONMENTAL HEALTH LIMITED | Private company limited by shares | Live |
| JOHNSON ENVIRONMENTAL HEALTH LIMITED | Private company limited by shares | Live |
| PINNACLE ENVIRONMENTAL HEALTH PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| Hebei Zhuoshao Environmental Technology Co., Limited | | Live |
| TAK HING LEADER ENVIRONMENTAL LIMITED | Private company limited by shares | Live |
| HINGFEI HK ENVIRONMENTAL PROTECTION LIMITED | Private company limited by shares | Live |
| AWE ENVIRONMENTAL (HK) LIMITED | Private company limited by shares | Dissolved |
| GHM ENVIRONMENTAL (HK) LIMITED | Private company limited by shares | Live |
| M&E ENVIRONMENTAL (HK) LIMITED | Private company limited by shares | Live |
| ENVIRONMENTAL CONSCIOUS ARCHITECTS (H.K.) LIMITED | Private company limited by shares | Live |
| GK ELECTRIC POWER ENVIRONMENTAL PROFECTION (HK) LIMITED | Private company limited by shares | Dissolved |
| Greens Environmental Bio-Technology (HK) Limited | Private company limited by shares | Dissolved |
| LENOVONERGY AND ENVIRONMENTAL (HK) LIMITED | Private company limited by shares | Dissolved |
| DAI HOEI ENVIRONMENTAL SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| GSE Environmental Holding Limited | Private company limited by shares | Live |
| WAI TAT HONG ENVIRONMENTAL LIMITED | Private company limited by shares | Live |
| Hong Yui Environmental Company Limited | | Live |
| HONG KONG ENVIRONMENTAL ASSOCIATION LIMITED | Private company limited by shares | Live |
| HONG KONG AUFUKTAT ENVIRONMENTAL ESTATE LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Bowshing Environmental Technology Limited | Private company limited by shares | Live |
| HONG KONG ENVIRONMENTAL HUQIN R&D CENTER LIMITED | Private company limited by shares | Live |
| HONG KONG ENVIRONMENTAL CENTER LIMITED | Private company limited by shares | Live |
| HONG KONG CENTRAL ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Chenyu Environmental Hong Kong Limited | Private company limited by shares | Live |
| CHINA HONG KONG ENVIRONMENTAL CAR ENGINEERING LIMITED | Private company limited by shares | Live |
| New Cwi (Hong Kong) Environmental Energy Co., Limited | | Live |
| HONG HEI ENVIRONMENTAL ENGINEERING CO., LIMITED | Private company limited by shares | Dissolved |
| HONG KONG ENVIRONMENTAL ART ENGINEERING CO., LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Rich Environmental Co., Limited | Private company limited by shares | Live |
| HONG KONG DAXIN ENVIRONMENTAL PROTECTION LIMITED | Private company limited by shares | Live |
| HONG KONG BIJIASHENG ENVIRONMENTAL ART DESIGN COMPANY LIMITED | Private company limited by shares | Dissolved |
| AMA (HONG KONG) ENVIRONMENTAL ART DESIGN CO., LIMITED | Private company limited by shares | Live |
| DILIGENT (HONG KONG) ENVIRONMENTAL LIMITED | Private company limited by shares | Live |
| Association of Hong Kong Environmental Engineering Limited | Private company limited by shares | Live |
| HONG KONG SAI KEE ENVIRONMENTAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| HONG KONG ENVIRONMENTAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| HONG KONG PACIFIC ENVIRONMENTAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Environmental And Carbon Exchange Limited | Private company limited by shares | Live |
| Green Environmental Investment (Hong Kong) Limited | Private company limited by shares | Dissolved |
| GREEN POWER ENVIRONMENTAL (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Green Environmental Technology Company Limited | | Live |
| SUN HING HONG ENVIRONMENTAL TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Hongtai Environmental Technology Limited | | Live |
| HONG KONG ENVIRONMENTAL INDUSTRY ASSOCIATION LIMITED | Company limited by guarantee | Live |
| HONG KONG INTELLIGENT ENVIRONMENTAL CO. LIMITED | Private company limited by shares | Live |
| LONG KE XIN ENVIRONMENTAL INVESTMENT (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| JINYUAN ENVIRONMENTAL TECHNOLOGY (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| KINGSFORD ENVIRONMENTAL (HONG KONG) LIMITED | Private company limited by shares | Live |
| 3R ENVIRONMENTAL (HONG KONG) LIMITED | Private company limited by shares | Live |
| SIN LOI ENVIRONMENTAL (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG ENVIRONMENTAL LIMITED | Private company limited by shares | Dissolved |
| YU JIN ENVIRONMENTAL (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| ENVIRONMENTAL COMPANY OF HONG KONG LIMITED | Private company limited by shares | Live |
| HONG KONG YI FU ENVIRONMENTAL LIMITED | Private company limited by shares | Live |
| Mei Wah Environmental (Hong Kong) Company Limited | Private company limited by shares | Live |
| HONG KONG ENVIRONMENTAL LIMITED | Private company limited by shares | Live |
| GRN Environmental (Hong Kong) Limited | Private company limited by shares | Live |
| HONG KONG MEI DI ENVIRONMENTAL LIMITED | | Live |
| BIOTEK ENVIRONMENTAL SCIENCE (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| LATINS ENVIRONMENTAL ART DESIGN (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| Shui Fa Environmental Health (Hong Kong) Limited | Private company limited by shares | Live |
| NORTH MORNING ENVIRONMENTAL (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SHUI HONG WAH (HONG KONG) ENVIRONMENTAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| WANG BROTHERS ENVIRONMENTAL (HONG KONG) LIMITED | Private company limited by shares | Live |
| Lesso Environmental Technology (Hong Kong) Limited | Private company limited by shares | Live |
| ENVIRONMENTAL LIGHTING (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| HONG KONG LUYOU ENVIRONMENTAL TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| Environmental Management Association of Hong Kong Limited -The- | Company limited by guarantee | Live |
| CAREMORE ENVIRONMENTAL MANAGEMENT (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG ENVIRONMENTAL MANAGEMENT LIMITED | Private company limited by shares | Live |
| ENVIRONMENTAL MANAGEMENT TECHNOLOGY (HONG KONG) LIMITED | Private company limited by shares | Live |
| NATURAL POWER ENVIRONMENTAL (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| OWEN (HONG KONG) ENVIRONMENTAL PROTECTION LIMITED | Private company limited by shares | Dissolved |
| PAUL'S (HONG KONG) ENVIRONMENTAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Environmental People Association Limited | Private company limited by shares | Live |
| Hong Kong Plastic Environmental Plastic Limited | Private company limited by shares | Live |
| HONG KONG FU CHEONG ENVIRONMENTAL PRODUCTS LIMITED | Private company limited by shares | Live |
| J. P. ENVIRONMENTAL PRODUCTS (HONG KONG) LIMITED | Private company limited by shares | Live |
| ECI ENVIRONMENTAL PRODUCTS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Aireason Environmental Protection Limited | Private company limited by shares | Live |