| S & J Enterprises Limited | Private company limited by shares | Dissolved |
| ELITE VIEW ENTERPRISES LIMITED | Private company limited by shares | Live |
| Cheuk See Engineering Company Limited | Private company limited by shares | Live |
| ENFRIEN SOLUTIONS HK LIMITED | Private company limited by shares | Live |
| Hong Kong Environmental And Carbon Exchange Limited | Private company limited by shares | Live |
| YUET WAH TECHNOLOGY ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOUTH EAST ASIA ENERGY GROUP LIMITED | Private company limited by shares | Dissolved |
| Global Environment Co., Limited | Private company limited by shares | Live |
| A&G (HK) Environment Landscape Design Consulting Limited | Private company limited by shares | Live |
| Bo Kwan New Energy Group Limited | Private company limited by shares | Live |
| UNI 21 Construction & Engineering Co. Limited | Private company limited by shares | Live |
| HK WING CHEE ENERGY SAVING LIMITED | Private company limited by shares | Dissolved |
| FACTOR X ENTERTAINMENT GROUP LIMITED | Private company limited by shares | Live |
| Uwe Semrau Engineering Limited | Private company limited by shares | Live |
| C.L CREATIVE ENGINEERING AND DESIGN LIMITED | Private company limited by shares | Dissolved |
| GOOD IDEA ENGINEERING LIMITED | Private company limited by shares | Live |
| SAN YAU LEE CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Live |
| MODERN ORIENTAL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| WONDERFUL ENVIRO-TECH LIMITED | Private company limited by shares | Dissolved |
| TRULY BEST ENGINEERING LIMITED | Private company limited by shares | Live |
| KIN TAT ENTERPRISE LIMITED | Private company limited by shares | Live |
| FAR ENERGY LIMITED | Private company limited by shares | Live |
| ENFINDUS ASIA PACIFIC LIMITED | Private company limited by shares | Live |
| Plenty Marble & Engineering Limited | Private company limited by shares | Live |
| Biomass Energy (Hong Kong) Co., Limited | Private company limited by shares | Live |
| GRACE FAME ENGINEERING LIMITED | Private company limited by shares | Live |
| GRAND HARVEST CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Live |
| EVER CONCORD ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SMART GROUP CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| ABLE SKY ENGINEERING LIMITED | Private company limited by shares | Live |
| MAGIC ENERGY LIMITED | Private company limited by shares | Live |
| RIGHT CHOICE ENGINEERING LIMITED | Private company limited by shares | Live |
| CEMIT SHANGHAI NAVAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| WHOLE DRAGON ENTERPRISES LIMITED | Private company limited by shares | Live |
| ENLIGHT E-TECH LIMITED | Private company limited by shares | Dissolved |
| WINSOME TECH ENGINEERING LIMITED | Private company limited by shares | Live |
| ENGAGE DIGITAL CONSULTANCY GROUP LIMITED | Private company limited by shares | Live |
| WN ENERGY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ENERGY RICH LIMITED | Private company limited by shares | Live |
| GOOD ENJOY LIMITED | Private company limited by shares | Dissolved |
| Harvir Engineering Trading Limited | Private company limited by shares | Live |
| EnviroTek Energy Technologies Limited | Private company limited by shares | Live |
| RICH SENSE ENTERPRISES LIMITED | Private company limited by shares | Live |
| Sinolux Engineering Consulting Co., Limited | Private company limited by shares | Dissolved |
| QUALITY ENERGY INVESTMENT LIMITED | Private company limited by shares | Live |
| DRAPA ENTERPRISE CO., LIMITED | Private company limited by shares | Dissolved |
| FULL CAPITAL ENTERPRISES LIMITED | Private company limited by shares | Live |
| NOAH ENERGY LIMITED | Private company limited by shares | Dissolved |
| AH SAY ENTERPRISES LIMITED | Private company limited by shares | Live |
| CHINA (HK) MEIZHIHE ENGINE ROOM EQUIPMENT LIMITED | Private company limited by shares | Live |
| New Energy Line (Nengli) Limited | Private company limited by shares | Live |
| STANDARD ENERGY GROUP LIMITED | Private company limited by shares | Live |
| LUNG HOI ENGINEERING LIMITED | Private company limited by shares | Live |
| MAXTOP ENGINEERING LIMITED | Private company limited by shares | Live |
| JAVATEX ENGINEERING LIMITED | Private company limited by shares | Live |
| RICHGOLD ENGINEERING LIMITED | Private company limited by shares | Live |
| RICH TARGET ENGINEERING LIMITED | Private company limited by shares | Live |
| SURE GOLD ENGINEERING LIMITED | Private company limited by shares | Live |
| ACE ENGINEERING MACHINERY CO., LIMITED | Private company limited by shares | Live |
| NETWORK SYSTEM ENGINEERING LIMITED | Private company limited by shares | Live |
| ITP Engineering Limited | Private company limited by shares | Live |
| HOMINGWAI ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| OMG ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| FIRST ENTERPRISES ASIA PACIFIC COMPANY LIMITED | Private company limited by shares | Live |
| STANDARD WELL ENTERPRISES LIMITED | Private company limited by shares | Live |
| COSUNE NEW ENERGY CO., LIMITED | Private company limited by shares | Live |
| CHUEN FOOK CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Live |
| ABC ENGINEERING LIMITED | Private company limited by shares | Live |
| Winning Engineering Limited | Private company limited by shares | Dissolved |
| HEY FAT CONSTRUCTION & ENGINEERING LIMITED | Private company limited by shares | Live |
| LONG GRAND ENTERPRISE LIMITED | Private company limited by shares | Live |
| YES ENERGO LIMITED | Private company limited by shares | Live |
| ELITE BASE ENGINEERING LIMITED | Private company limited by shares | Live |
| SRB ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| SMART ENGINEERING SYSTEMS LIMITED | Private company limited by shares | Live |
| HK SHENGJIAYOU INDOOR DESIGN ENGINEERING LIMITED | Private company limited by shares | Live |
| Ongoing Network Engineering Limited | Private company limited by shares | Dissolved |
| ENORMOUS RICH LIMITED | Private company limited by shares | Dissolved |
| Honor Engineering and Construction Limited | Private company limited by shares | Live |
| Orient Environment (China) Investment Development Company Limited | Private company limited by shares | Live |
| HK LEO ENERGY LIGHTING LIMITED | Private company limited by shares | Live |
| NEW WAH YING ENGINEERING LIMITED | Private company limited by shares | Live |
| PACIFIC RIM ENERGY GROUP COMPANY LIMITED | Private company limited by shares | Live |
| ZHENJIANG EASTCHINA DIESEL ENGINE PARTS CO., LIMITED | Private company limited by shares | Live |
| KONG'S ELECTRONIC ENGINEERING LIMITED | Private company limited by shares | Live |
| MAINCO ENGINEERING LIMITED | Private company limited by shares | Live |
| Permanent Rich Energy Limited | Private company limited by shares | Dissolved |
| ENJOY TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| PHOENIX WITH HOPE SOCIAL ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| VANPEC ENERGY LIMITED | Private company limited by shares | Dissolved |
| TIME LUCKY ENTERPRISES LIMITED | Private company limited by shares | Live |
| SUN POWER GREEN ENERGY LIMITED | Private company limited by shares | Dissolved |
| ENVIRONMENTAL RECYCLING INVESTMENT (HK) LIMITED | Private company limited by shares | Dissolved |
| Lau Man Wai Engineering Company Limited | Private company limited by shares | Live |
| NEW NGAI ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Starlight Geotechnical Engineering Limited | Private company limited by shares | Live |
| CHINA OCEAN ENGINEERING LIMITED | Private company limited by shares | Live |
| CHINA YUAN DA ENERGY STOCK LIMITED | Private company limited by shares | Dissolved |
| Top Rise Engineering Company Limited | Private company limited by shares | Live |
| STERN ENTERPRISE CO., LIMITED | Private company limited by shares | Live |