| ENERGY TOWER LIMITED | Private company limited by shares | Live |
| ENERGY ABLE INDUSTRIAL LIMITED | Private company limited by shares | Live |
| Chong Lee Engineering Limited | Private company limited by shares | Live |
| HK NEW TIMES ENTERPRISES LIMITED | Private company limited by shares | Live |
| Koll Environment Management Limited | Private company limited by shares | Live |
| ONE ZENITH DESIGN ENGINEERING LIMITED | Private company limited by shares | Live |
| ENGINE YANG TRADING LIMITED | Private company limited by shares | Live |
| ME Energy Systems Limited | Private company limited by shares | Live |
| Vast Mechanical and Electrical Engineering Co Limited | Private company limited by shares | Live |
| United Asia Entertainments Co., Limited | Private company limited by shares | Live |
| I CAN DESIGN ENGINEERING LIMITED | Private company limited by shares | Live |
| SUN ENTERTAINMENT LIMITED -THE- | Private company limited by shares | Live |
| GOOD BASIS ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| HKT ENGINEERING LIMITED | Private company limited by shares | Live |
| BOYI ENGINEERING LIMITED | Private company limited by shares | Live |
| Goldseed Energy Holding Limited | Private company limited by shares | Live |
| Endel Technology Co., Limited | Private company limited by shares | Live |
| First Engine Limited | Private company limited by shares | Live |
| DHD Enterprise Limited | Private company limited by shares | Live |
| Lap Yip Construction Engineering Limited | Private company limited by shares | Live |
| ENJT COMPANY LIMITED | Private company limited by shares | Live |
| ITECH Construction & Engineering Limited | Private company limited by shares | Live |
| WANG ON CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Live |
| MAGIC TIME ENTERPRISES LIMITED | Private company limited by shares | Live |
| FULL NICE ENGINEERING LIMITED | Private company limited by shares | Live |
| RICH WISE ENGINEERING LIMITED | Private company limited by shares | Live |
| KAM YIK ENTERPRISES LIMITED | Private company limited by shares | Live |
| ABLE FAME ENGINEERING LIMITED | Private company limited by shares | Live |
| WEALTH NICE ENTERPRISE LIMITED | Private company limited by shares | Live |
| WELL RISE ENGINEERING LIMITED | Private company limited by shares | Live |
| Englande Limited | Private company limited by shares | Live |
| Jls Enterprise Limited | Private company limited by shares | Live |
| Ying Sai Motor Engineering Limited | Private company limited by shares | Live |
| Hei Ka Engineering Limited | Private company limited by shares | Live |
| New Star Environmental Recycling Company Limited | Private company limited by shares | Live |
| New Star Machinery Engineering Company Limited | Private company limited by shares | Live |
| New Star E&M Engineering Company Limited | Private company limited by shares | Live |
| Resources Construction & Engineering Co., Limited | Private company limited by shares | Live |
| KAYI Engineering Limited | Private company limited by shares | Live |
| Enfield Services Limited | Private company limited by shares | Live |
| Vansun Engineering Co., Limited | Private company limited by shares | Live |
| KIU SAN E&M ENGINEERING CO. LIMITED | Private company limited by shares | Live |
| POR KEE ELECTRICAL ENGINEERING CO LIMITED | Private company limited by shares | Live |
| Stone Forest Environmental Co., Limited | Private company limited by shares | Live |
| ENERGIMAT CO., LIMITED | Private company limited by shares | Live |
| H&F Engineering Limited | Private company limited by shares | Dissolved |
| M Cube Engineering Limited | Private company limited by shares | Live |
| Forex Engineering Limited | Private company limited by shares | Live |
| HAPPY CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Live |
| YING YIP ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| HK ZHONGXINQI ENGINEERING LIMITED | Private company limited by shares | Live |
| HOP YUEN ENGINEERING LIMITED | Private company limited by shares | Live |
| Prosafe Engineering Limited | Private company limited by shares | Live |
| VV ENGINEERING & DESIGN COMPANY LIMITED | Private company limited by shares | Live |
| UNIVERSAL ENVIRONMENTAL ENTERPRISE LIMITED | Private company limited by shares | Live |
| MAINTECH ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| Diligent Group Engineering Limited | Private company limited by shares | Live |
| WELL CENTURY ENTERPRISES LIMITED | Private company limited by shares | Live |
| Chong Chi Construction Engineering Limited | Private company limited by shares | Live |
| JH Enterprises Limited | Private company limited by shares | Live |
| RT AI Engineering Limited | Private company limited by shares | Live |
| New Environmental Limited | Private company limited by shares | Live |
| UNITED CONCORD ENTERPRISES LIMITED | Private company limited by shares | Live |
| CP CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Live |
| Hot Wing Engineering (Hong Kong) Co., Limited | Private company limited by shares | Live |
| VIP ENTERPRISE LIMITED | Private company limited by shares | Live |
| One Yuet Engineering Limited | Private company limited by shares | Live |
| CPD Energy Investment Co., Limited | Private company limited by shares | Live |
| YUMAO ENERGY TRADE LIMITED | Private company limited by shares | Live |
| WANG CHUNG ENGINEERING LIMITED | Private company limited by shares | Live |
| CENTURY ASIA ENTERPRISES LIMITED | Private company limited by shares | Live |
| CENTURY SMART ENTERPRISES LIMITED | Private company limited by shares | Live |
| MAYMEN HI-TECH & ENVIRONMENTAL GROUP LIMITED | Private company limited by shares | Live |
| V ONE ENTERPRISES LIMITED | Private company limited by shares | Live |
| EP Enterprise Limited | Private company limited by shares | Live |
| Kwan Lui Firetech Engineering Limited | Private company limited by shares | Live |
| Linkage System Engineering Limited | Private company limited by shares | Live |
| ENLONG TRADE LIMITED | Private company limited by shares | Live |
| CCL Engineering Company Limited | Private company limited by shares | Live |
| EVEREST ENERGY LIMITED | Private company limited by shares | Live |
| Kai Hip Engineering Company Limited | Private company limited by shares | Live |
| ZHEJIANG ENJOY GROUP CO., LIMITED | Private company limited by shares | Live |
| WING FAI ENGINEERING CONSTRUCTION LIMITED | Private company limited by shares | Live |
| Ying Sheng Enrich Limited | Private company limited by shares | Live |
| Ying Tai Enrich Limited | Private company limited by shares | Live |
| Yue Hui Enrich Limited | Private company limited by shares | Live |
| RAY'S ENGINEERING LIMITED | Private company limited by shares | Live |
| TIP TOP ENGINEERING LIMITED | Private company limited by shares | Live |
| STARZ ENGINEERING LIMITED | Private company limited by shares | Live |
| East Hongmao Energy Limited | Private company limited by shares | Dissolved |
| ENJOYABLE HONG KONG LIMITED | Private company limited by shares | Live |
| TRG Enterprises Company Limited | Private company limited by shares | Live |
| Gu Ru Enterprise PVT Limited | Private company limited by shares | Live |
| ENYAN TRADE LIMITED | Private company limited by shares | Live |
| TAT NGAI ENGINEERING CO., LIMITED | Private company limited by shares | Live |
| New Notion Design & Engineering Company Limited | Private company limited by shares | Live |
| Glorious Power Engineering Limited | Private company limited by shares | Live |
| Fusuo Energy Technology Company Limited | Private company limited by shares | Live |
| Coronel Energy Solutions Limited | Private company limited by shares | Live |
| MOUNTAINTOP ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |