| UNION GROUP INTERNATIONAL ENTERPRISE CO., LIMITED | Private company limited by shares | Live |
| UNITED HILL INVESTMENT LIMITED | Private company limited by shares | Live |
| LAND UNION LIMITED | Private company limited by shares | Live |
| UNION CHOICE INTERNATIONAL CREATION LIMITED | Private company limited by shares | Dissolved |
| WINNING UNION LIMITED | Private company limited by shares | Dissolved |
| MILLION UNITY LIMITED | Private company limited by shares | Live |
| UNION WIDE INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION ON INTERNATIONAL INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNIFICATION SHIPPING LIMITED | Private company limited by shares | Dissolved |
| TOP AND UNION SOURCING COMPANY LIMITED | Private company limited by shares | Dissolved |
| HK UNION EXPORTING LIMITED | Private company limited by shares | Live |
| WORLD WIDE UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNIND ENAMELING CO., LIMITED | Private company limited by shares | Dissolved |
| HERO UNION LIMITED | Private company limited by shares | Live |
| ORIENTAL UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNILINK ENTERPRISES LIMITED | Private company limited by shares | Live |
| LONG UNION LIMITED | Private company limited by shares | Dissolved |
| Unity 4wd Accessories Co., Limited | Private company limited by shares | Live |
| XIANGJIANG UNIVERSITY LIMITED | Private company limited by shares | Dissolved |
| Unity Bathroom Limited | Private company limited by shares | Dissolved |
| UNION ACHIEVED LIMITED | Private company limited by shares | Live |
| UNIVERSITY OF HONG KONG (SHENZHEN) LIMITED -THE- | Company limited by guarantee | Live |
| UNION WORLD SHIPPING LIMITED | Private company limited by shares | Live |
| UNIVERSAL WIN LIMITED | Private company limited by shares | Live |
| MILLION UNIVERSAL LIMITED | Private company limited by shares | Live |
| WORLD UNION HONG KONG INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION BRIGHT HONG KONG GROUP LIMITED | Private company limited by shares | Live |
| UNION MASTER DEVELOPMENT LIMITED | Private company limited by shares | Live |
| STAR & UNIVERSE ELECTRONIC LIMITED | Private company limited by shares | Dissolved |
| UNION INTERNATIONAL INDUSTRY (HK) LIMITED | Private company limited by shares | Dissolved |
| DE (EUROPEAN UNION) EXHIBITION SERVICE CO., LIMITED | Private company limited by shares | Live |
| UNITED CHINESE INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| UNION SUNSHINE GROUP LIMITED | Private company limited by shares | Dissolved |
| University Medical Center Company Limited | Private company limited by shares | Live |
| UNION TEAM CORPORATION LIMITED | Private company limited by shares | Dissolved |
| UNITED NATIONS ASEAN PROCUREMENT AND TRADING CENTRE GROUP LIMITED | Private company limited by shares | Dissolved |
| UNI-BRIGHT JEWELLERY LIMITED | Private company limited by shares | Dissolved |
| J UNIT LIMITED | Private company limited by shares | Live |
| HK UNION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| WIN UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNITED LEADER INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| FAREAST UNITED INVESTMENT GROUP LIMITED | Private company limited by shares | Live |
| UNION GLORY MINING LIMITED | Private company limited by shares | Dissolved |
| UNITED POWER ASIA INVESTMENT LIMITED | Private company limited by shares | Live |
| UNI-POWER (ASIA) LIMITED | Private company limited by shares | Live |
| Universal Prestige Finance Company Limited | Private company limited by shares | Live |
| CROWN UNION INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Union Energy Group Limited | Private company limited by shares | Dissolved |
| UNION FIELD ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNI-SOFT SYSTEMS (CHINA) LIMITED | Private company limited by shares | Live Commenced dormancy on 08-Dec-2014 |
| UNITED MINERALS CO., LIMITED | Private company limited by shares | Live |
| UNION GLORY (HK) INT'L TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION GLORY MINING EXPLORATION LIMITED | Private company limited by shares | Live |
| GR UNIVERSAL TRADING LIMITED | Private company limited by shares | Live |
| CY UNION HK CO., LIMITED | Private company limited by shares | Dissolved |
| HONGKONG CHINESE UNION GROUP CO., LIMITED | Private company limited by shares | Live |
| SUN UNION INT'L CHRONIC DISEASE MANAGEMENT LIMITED | Private company limited by shares | Live |
| UNION REALTY COMPANY LIMITED | Private company limited by shares | Live |
| UNITED SOLAR HOLDING LIMITED | Private company limited by shares | Dissolved |
| SUN UNION BIODEGRADABLE PLASTIC LIMITED | Private company limited by shares | Live |
| UNI-FAITH ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| GLORY UNION GLOBAL LIMITED | Private company limited by shares | Dissolved |
| UNITED ORIENT PRODUCTS LIMITED | Private company limited by shares | Live |
| ACE UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION WELL ASIA GROUP LIMITED | Private company limited by shares | Live |
| BEAUTY UNITED COMPANY LIMITED | Private company limited by shares | Live |
| UNION FINE LUBRICATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| MELODY IMAGE INTERNATIONAL UNION CO., LIMITED | Private company limited by shares | Dissolved |
| UNION TREASURE INTERNATIONAL INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| WISE UNION CORPORATION LIMITED | Private company limited by shares | Live |
| UNITED CHAMP LIMITED | Private company limited by shares | Live |
| LUCKY UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Universe Creative World (HongKong) Limited | Private company limited by shares | Live |
| UNION INTERNATIONAL GROUP (HK) LIMITED | Private company limited by shares | Live |
| UNI-PROFIT INC. LIMITED | Private company limited by shares | Dissolved |
| UNION KING PACIFIC LIMITED | Private company limited by shares | Live |
| SILVER SUN UNIVERSAL LIMITED | Private company limited by shares | Live |
| BEST UNITED LIMITED | Private company limited by shares | Dissolved |
| THEMIS UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNITED IMPEX COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION LINK INTERNATIONAL INDUSTRIAL LIMITED | Private company limited by shares | Live |
| GLOBAL EDUCATION UNION CULTURE MEDIA LIMITED | Private company limited by shares | Live |
| QUEEN UNION LIMITED | Private company limited by shares | Dissolved |
| Union Morris Holdings Limited | Private company limited by shares | Live |
| CHINA UNION STEEL HOLDING CO., LIMITED | Private company limited by shares | Dissolved |
| UNION INTERNATIONAL CORPORATION LIMITED | Private company limited by shares | Dissolved |
| KOBO UNIVERSAL TRADING LIMITED | Private company limited by shares | Live |
| SINIC UNION BUSINESS CONSULTANT (HK) LIMITED | Private company limited by shares | Live |
| MEGA UNION HONG KONG DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED AGENT LIMITED | Private company limited by shares | Dissolved |
| UNION WELL GROUP HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| MULTI UNION FAR EAST LIMITED | Private company limited by shares | Dissolved |
| SMART UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNITED FAME (CHINA) LIMITED | Private company limited by shares | Dissolved |
| Ruixin Universal Limited | Private company limited by shares | Live |
| UNIVERSAL YIELD LIMITED | Private company limited by shares | Live |
| FOCUS MARKET UNION LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL TECH LIMITED | Private company limited by shares | Live |
| LEGEND UNION GRAND PROFIT LIMITED | Private company limited by shares | Dissolved |
| Uni-Cell Investment Limited | Private company limited by shares | Dissolved |