| KINING ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| C & G Environmental Technology (Urban Projects) Limited | Private company limited by shares | Live |
| WIN GLORY ENGINEERING LIMITED | Private company limited by shares | Live |
| ENGCUT LIMITED | Private company limited by shares | Dissolved |
| TEMMEX BROTHERS ENGINEERING LIMITED | Private company limited by shares | Live |
| KONG TALENT ENTERPRISE LIMITED | Private company limited by shares | Live |
| CREATIVE STAR ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| GRAND TALENT ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| ENVIRONMENT PERSPECTIVE LIMITED | Private company limited by shares | Live |
| LIANG JI NEW ENERGY COMPANY LIMITED | Private company limited by shares | Live |
| PARMAX ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| China Environmental City Management Limited | Private company limited by shares | Live |
| TUNG YIP ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| ARTFULL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| ENERGY KEY LIMITED | Private company limited by shares | Dissolved |
| LEADER ENGINEERING (ELECTRICAL & MECHANICAL) LIMITED | Private company limited by shares | Live |
| DESIGN SQUARE ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| ENERGY WOOD LIMITED | Private company limited by shares | Dissolved |
| GREENBELT LANDSCAPE & ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| Hang Seng Engineering (Asia) Limited | Private company limited by shares | Dissolved |
| D & G ENGINEERING LIMITED | Private company limited by shares | Live |
| HENRY CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| ENERGY ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| CREATIVE CONCEPT ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| TALENT VIEW ENGINEERING LIMITED | Private company limited by shares | Live |
| Rinove Enterprise Limited | Private company limited by shares | Live |
| KAITEK ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| ENVISION ENTERPRISE (ASIA) LIMITED | Private company limited by shares | Live |
| VICTORY ENERGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| ASK ENGINEERING CONSULTANCY LIMITED | Private company limited by shares | Live |
| JUN YI ENGINEERING LIMITED | Private company limited by shares | Live |
| SHANGHAI KAIMEIRUI ENERGY-SAVING ELECTRICAL LIMITED | Private company limited by shares | Dissolved |
| BEM ENGINEERING LIMITED | Private company limited by shares | Live |
| CSI Construction Engineering Limited | Private company limited by shares | Live |
| SUN HUO ENTERPRISE COMPANY LIMITED | Private company limited by shares | Dissolved |
| HONGKONG JUN JIE ENVIRONMENT PROTECTION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| CHINA SPACE ENVIRONMENTAL PROTECTION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Wison Engineering Company Limited | Private company limited by shares | Live |
| ENSEC SOLUTIONS HONG KONG LIMITED | Private company limited by shares | Live |
| UNITED ENERGY TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| DRILLING FLUIDS ENGINEERING SOFTWARE LIMITED | Private company limited by shares | Live |
| LEE TECH ENGINEERING LIMITED | Private company limited by shares | Live |
| SHIJIAZHUANG AQUAENJOY ENVIRONMENT CORPORATION LIMITED | Private company limited by shares | Live |
| TIN HA ENVIRONMENTAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| ENNER TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Live |
| TAI YIP ENGINEERING (HONG KONG) LIMITED | Private company limited by shares | Live |
| YU CHAU INSTALLATION ENGINEERING LIMITED | Private company limited by shares | Live |
| AEGIS ENGINEERING PLASTIC COMPANY LIMITED | Private company limited by shares | Dissolved |
| SAI WAI ENVIRONMENTAL PROTECTION (SEWAGE DISPOSAL) LIMITED | Private company limited by shares | Dissolved |
| WING ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| LODESTAR ENVIRONMENT TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| ERA ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| Wang On Engineering Limited | Private company limited by shares | Dissolved |
| ENHANCE MARKETING LIMITED | Private company limited by shares | Dissolved |
| XIN DA P & D ENGINEERING LIMITED | Private company limited by shares | Live |
| A-GRADE ENERGY SOLUTION COMPANY LIMITED | Private company limited by shares | Live |
| ARKHANGAI ENGINEERING LIMITED | Private company limited by shares | Live |
| WEALTHY FOREST ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| Presto Scaffolding & Engineering Limited | Private company limited by shares | Live |
| Encom Asia Limited | Private company limited by shares | Live |
| NEW JOY ENTERPRISE LIMITED | Private company limited by shares | Live |
| WING TAT CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| Hi-Tech Technology Engineering Limited | Private company limited by shares | Live |
| RUNGAKERAYA ENGINEERING (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| General Tech & Engineering Company Limited | Private company limited by shares | Live |
| SUNNY CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| W2a Engineering Consulting Limited | Private company limited by shares | Dissolved |
| ENTER HK LIMITED | Private company limited by shares | Dissolved |
| HAN MA ENTERPRISE LIMITED | Private company limited by shares | Live |
| MEDIPRO ENTERPRISE LIMITED | Private company limited by shares | Live |
| JOYSTAR DESIGN & ENGINEERING LIMITED | Private company limited by shares | Live |
| EAST COMBUSTION ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| NEW POWER TIMBER ENGINEERING LIMITED | Private company limited by shares | Live |
| HUA SUI ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| NEW EAST OCEAN ENTERPRISES COMPANY LIMITED | Private company limited by shares | Live |
| Environnement Hong Kong Limited | Private company limited by shares | Live |
| SUNNY ENERGY LIMITED | Private company limited by shares | Live |
| TOP SILVER ENGINEERING AND TRADING LIMITED | Private company limited by shares | Live |
| LI PO ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Ecode Energy Corp. Limited | Private company limited by shares | Dissolved |
| MINGA TRADING & ENGINEERING LIMITED | Private company limited by shares | Live |
| XIAMEN ENJOY ARTS FLOWER CO., LIMITED | Private company limited by shares | Live |
| SKY DRAGON ENTERPRISES LIMITED | Private company limited by shares | Live |
| JETION ENERGY POWER LIMITED | Private company limited by shares | Live |
| CHINA ENERGIES CORPORATION LIMITED | Private company limited by shares | Live |
| NEW ORIENTAL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| JIN YUAN ENERGY (HOLDING) GROUP LIMITED | Private company limited by shares | Dissolved |
| Mekong Energy Developments Limited | Private company limited by shares | Dissolved |
| FUJIAN ORIENT ENGINEERING LIMITED | Private company limited by shares | Live |
| YIHE INTERNATIONAL (HK) ARCHITECTURAL LANDSCAPE ENGINNEEING DESIGN LIMITED | Private company limited by shares | Dissolved |
| LIFENG ENERGY HOLDING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Ener-Con Engineering Limited | Private company limited by shares | Live |
| GLOBAL SUCCESS ENGINEERING LIMITED | Private company limited by shares | Live |
| LEE TAT ENGINEERING CO. LIMITED | Private company limited by shares | Dissolved |
| METROGAIN ENGINEERING LOGISTIC LIMITED | Private company limited by shares | Live |
| KFP ENGINEERING LIMITED | Private company limited by shares | Live |
| Strategic Advantage Enterprises Limited | Private company limited by shares | Live |
| ENLIGHT E-TECH LIMITED | Private company limited by shares | Dissolved |
| Green Energy Enterprise Company Limited | Private company limited by shares | Dissolved |
| POWER GLORY ENGINEERING LIMITED | Private company limited by shares | Live |