| CROWN UNION GLOBAL LIMITED | Private company limited by shares | Dissolved |
| UNION INDUSTRY (HK) CO., LIMITED | Private company limited by shares | Live |
| UNION SMART TRADING LIMITED | Private company limited by shares | Live |
| Mega Union Clover Co., Limited | Private company limited by shares | Live |
| UNION STAR CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| EAGLE UNION LIMITED | Private company limited by shares | Live |
| UNIVERSAL NEW STYLE CO., LIMITED | Private company limited by shares | Live |
| UNION SPREAD LIMITED | Private company limited by shares | Dissolved |
| SEA UNION INTERNATIONAL LOGISTICS (HONG KONG) LIMITED | Private company limited by shares | Live |
| Union Finance and Consulting Limited | Private company limited by shares | Dissolved |
| INTERNATIONAL MEETING UNION (HONG KONG) LIMITED | Private company limited by shares | Live |
| Victory (Universal) Trading Limited | Private company limited by shares | Dissolved |
| AURUM UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| FK UNITED TRADING COMPANY LIMITED | Private company limited by shares | Live |
| PARK UNION STAR LIMITED | Private company limited by shares | Dissolved |
| TIMES UNION DEVELOPMENT SHARE CO., LIMITED | Private company limited by shares | Live |
| UNIBEST (ASIA) LIMITED | Private company limited by shares | Live |
| VICTORY UNION LIMITED | Private company limited by shares | Live |
| UNIVERSAL FAME LIMITED | Private company limited by shares | Live |
| UNISON LIMITED | Private company limited by shares | Live |
| SUNTEX UNION LIMITED | Private company limited by shares | Live |
| UNITED TOP CREATION LIMITED | Private company limited by shares | Dissolved |
| FULLY FORM UNI-COMMERCE LIMITED | Private company limited by shares | Dissolved |
| WELL UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| International Union Company Limited | Private company limited by shares | Live |
| EAST UNION LOGISTICS LIMITED | Private company limited by shares | Dissolved |
| UNION SMART HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION CITY (HONG KONG) LIMITED | Private company limited by shares | Live |
| HONGKONG UNION YIELD LIMITED | Private company limited by shares | Live |
| United Cafe Limited | Private company limited by shares | Live |
| HONGKONG KING UNION LIMITED | Private company limited by shares | Live Commenced dormancy on 15-Oct-2014 |
| ORIGINAL SOURCE UNION CO., LIMITED | Private company limited by shares | Live |
| UNIVERSAL GLOBAL TRADING LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL EXPORTS GROUP LIMITED | Private company limited by shares | Live |
| ORIENT UNION GROUP LIMITED | Private company limited by shares | Live |
| UNISON DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| CHINA CAPITAL SOURCE UNION HOLDING LIMITED | Private company limited by shares | Live |
| UNION MATE DEVELOPMENT LIMITED | Private company limited by shares | Live |
| NEW UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION MATE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNIVERSE TRADING (H.K.) LIMITED | Private company limited by shares | Live |
| UNION GALAXY ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNITED WISE TEXTILES LIMITED | Private company limited by shares | Live |
| Best Creative Union Limited | Private company limited by shares | Live |
| UNION WORLD INVESTMENT DEVELOPMENT LIMITED | Private company limited by shares | Live |
| BEST UNION CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL ACCESSORIES TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| ASIA UNIVERSITY OF BUSINESS & TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNITED GAIN TRADING LIMITED | Private company limited by shares | Live |
| ADVANCE UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| WONDERFUL STAR UNION ENERGY LIMITED | Private company limited by shares | Dissolved |
| MITSUBISHI UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL MOTOR LIMITED | Private company limited by shares | Dissolved |
| NEW UNIVERSAL ALUMINIUM CO. LIMITED | Private company limited by shares | Live |
| CHINA UNIVERSE NEW ENERGY GROUP LIMITED | Private company limited by shares | Live |
| UNILINK MERCHANDISE LIMITED | Private company limited by shares | Live |
| UNION HONG LIMITED | Private company limited by shares | Dissolved |
| UNIDIS INVESTMENTS LIMITED | Private company limited by shares | Live |
| AMERICAN VERMONT UNIVERSITY LIMITED | Private company limited by shares | Dissolved |
| WAVE UNION LIMITED | Private company limited by shares | Live |
| WORLD UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION PACIFIC INTERNATIONAL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNITED BRAVERY INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNI-RICH LIMITED | Private company limited by shares | Live |
| UNION RICHLY TRADING LIMITED | Private company limited by shares | Dissolved |
| UNIQUE YOU LIMITED | Private company limited by shares | Dissolved |
| USA UNION HOLDING GROUP CO., LIMITED | Private company limited by shares | Live |
| EVER UNION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNION WIN TECHNOLOGY LIMITED | Private company limited by shares | Live |
| NEW EAST UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNITED EASY LIMITED | Private company limited by shares | Live |
| UNION WAY LOGISTICS LIMITED | Private company limited by shares | Dissolved |
| UNION PROSPER (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION KEEN LIMITED | Private company limited by shares | Dissolved |
| UNITED SQUARE LIMITED | Private company limited by shares | Live |
| UNITIZE COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION INDUSTRIAL & DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNICESS Studio Limited | Private company limited by shares | Dissolved |
| HONGKONG UNION POWER LIMITED | Private company limited by shares | Dissolved |
| HONGKONG BEST UNION LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL VITALITY LIMITED | Private company limited by shares | Dissolved |
| UNION SKY WINE COMPANY LIMITED | Private company limited by shares | Dissolved |
| SMART UNION CORPORATION LIMITED | Private company limited by shares | Live |
| UNION RICH INVESTMENT (GROUP) LIMITED | Private company limited by shares | Dissolved |
| U-Top Universal Co., Limited | Private company limited by shares | Live |
| UNION DIGITAL EXPORT CO., LIMITED | Private company limited by shares | Live |
| UNION KING DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| HONGKONG UNIXO INTERNATIONAL GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| Eastech & Unison Controls Engineering Co., Limited | Private company limited by shares | Live |
| SMART UNIRICH LIMITED | Private company limited by shares | Live |
| SMARTWIN UNION LIMITED | Private company limited by shares | Live |
| ASIA-EUROPE UNION SUCCESS TRADING LIMITED | Private company limited by shares | Live |
| UNITRADE CAPITAL RESOURCES LIMITED | Private company limited by shares | Live |
| UNION BEST WEALTH CREATION LIMITED | Private company limited by shares | Live |
| NEW UNITY ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION DUTY-FREE LIMITED | Private company limited by shares | Live |
| UNION CAMERA HONG KONG LIMITED | Private company limited by shares | Live |
| UNION COMPUTER SUPPLIES LIMITED | Private company limited by shares | Live |
| HAPPY UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION LINK INTERNATIONAL INVESTMENT CO., LIMITED | Private company limited by shares | Live |