| UNION RICH DEVELOP LIMITED | Private company limited by shares | Dissolved |
| UNION WAY INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| UNITY LINK LIMITED | Private company limited by shares | Live |
| UNION HORIZON LIMITED | Private company limited by shares | Live |
| NEW UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| SKY UNIVERSE INDUSTRIAL HOLDING (HK) INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| STAR ENTERTAINMENT (UNIVERSE) LIMITED | Private company limited by shares | Live |
| UNION CAPITAL RESOURCES LIMITED | Private company limited by shares | Dissolved |
| SINO UNION INTERNATIONAL ENERGY LIMITED | Private company limited by shares | Dissolved |
| GRACE UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION IMPACT ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION FASHION (HK) INTERNATIONAL GROUP LIMITED | Private company limited by shares | Dissolved |
| GERMANY UNIVERSAL MACHINERY LIMITED | Private company limited by shares | Dissolved |
| UNION SKY INDUSTRIAL (HONGKONG) LIMITED | Private company limited by shares | Dissolved |
| HK UNION FULL HARDWARE PRODUCTION LIMITED | Private company limited by shares | Dissolved |
| Union Tourist Rental Car Limited | Private company limited by shares | Live |
| UNITECH ELECTRONICS INTERNATIONAL (HK) LIMITED | Private company limited by shares | Live |
| CHINA BRAND MARKETING UNION LIMITED | Private company limited by shares | Dissolved |
| UNIQOMM LIMITED | Private company limited by shares | Dissolved |
| UNITED SHIPOWNERS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITED PACIFIC RESOURCE INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNITED TARGET ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| WISDOM UNIT LIMITED | Private company limited by shares | Live |
| UNION CHAMPION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNIT-BRANDING & MERCHANDISING LIMITED -THE- | Private company limited by shares | Live |
| UNITED ASSET LIMITED | Private company limited by shares | Dissolved |
| UNITED LUCK LIMITED | Private company limited by shares | Live |
| FIRST UNIQUE LIMITED | Private company limited by shares | Live |
| CAPITAL UNION LIMITED | Private company limited by shares | Live |
| VAST UNIVERSO LIMITED | Private company limited by shares | Live |
| Union Electronics Enterprise Company Limited | Private company limited by shares | Dissolved |
| SHEEN UNION LIMITED | Private company limited by shares | Live |
| RISE UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| GLOBAL UNIVERSE TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION GAIN FINANCE LIMITED | Private company limited by shares | Dissolved |
| UNIQUE DAY LIMITED | Private company limited by shares | Dissolved |
| UNION DESIGN LIMITED | Private company limited by shares | Live |
| UNIMPEDED (HK) INTERNATIONAL GROUP LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL ECPAY GROUP LIMITED | Private company limited by shares | Live |
| UNIQUE MASTER LIMITED | Private company limited by shares | Live |
| UNION INDUSTRY LIMITED | Private company limited by shares | Live |
| UNIVERSE IMPORT EXPORT CO., LIMITED | Private company limited by shares | Live |
| NEW UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| UNION HONOUR TRADING LIMITED | Private company limited by shares | Live |
| UNION HONOUR TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| Universal Winning Limited | Private company limited by shares | Live |
| UNION FORTUNE HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION RICH INVESTMENTS LIMITED | Private company limited by shares | Live |
| SILVER UNION DEVELOP LIMITED | Private company limited by shares | Dissolved |
| UNION TOP ASIA PACIFIC LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL HUMANITARIAN COMPANY LIMITED | Private company limited by shares | Live |
| UNION PACIFIC CORPORATION LIMITED | Private company limited by shares | Dissolved |
| UNI-SUCCESS (CHINA) LIMITED | Private company limited by shares | Dissolved |
| CHAMP UNION LIMITED | Private company limited by shares | Dissolved |
| UNI-SENSE LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION TRADE (HK) LIMITED | Private company limited by shares | Dissolved |
| GOLD UNION INVESTMENTS HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION STRONG DEVELOPMENT HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNIQUE HOPE LIMITED | Private company limited by shares | Live |
| WORLD PETROLEUM RESOURCES UNION INVESTMENT (HOLDINGS) LIMITED -THE- | Private company limited by shares | Dissolved |
| UNITED SIGHT LIMITED | Private company limited by shares | Live |
| UNIQUE ALLY LIMITED | Private company limited by shares | Dissolved |
| UNIQUE VIEW LIMITED | Private company limited by shares | Live |
| UNIQUE IDEA LIMITED | Private company limited by shares | Live |
| UNITY OFFICE FURNITURE LIMITED | Private company limited by shares | Live |
| UNISONIC INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNIVERSAL AGENCY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL POWER TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| WESTERN UNION GROUP (HK) LIMITED | Private company limited by shares | Live |
| UNI-TOP SHIPPING LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL ENTERPRISE (HKSAR) LIMITED | Private company limited by shares | Live |
| UNION TECH ASIA PACIFIC LIMITED | Private company limited by shares | Dissolved |
| BRIGHT UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNI-TECH CREATION LIMITED | Private company limited by shares | Live |
| TOP UNION HONG KONG INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SMART UNION GLOBAL LIMITED | Private company limited by shares | Dissolved |
| GLOBAL UNION INTERNATIONAL ENTERPRISE LIMITED | Private company limited by shares | Live |
| BEIBU GULF CAPITAL UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION FINE INVESTMENT LIMITED | Private company limited by shares | Live |
| UNIQUE TRADING LIMITED | Private company limited by shares | Dissolved |
| UNIQUE LUCK LIMITED | Private company limited by shares | Dissolved |
| UNION HOPE (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNITEK HK LIMITED | Private company limited by shares | Dissolved |
| GREATEN UNION LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL LINK LIMITED | Private company limited by shares | Live |
| SKY UNITED ENTERPRISES LIMITED | Private company limited by shares | Live |
| UN ELDER INDUSTRY UNION LIMITED | Private company limited by shares | Dissolved |
| UNITED ELECTECH LIMITED | Private company limited by shares | Live |
| UNION INTERNATIONAL CAPITAL LIMITED | Private company limited by shares | Dissolved |
| BEST UNION HONG KONG DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| CHINA UNIQUE INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION FAMOUS ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION VAST LIMITED | Private company limited by shares | Dissolved |
| UNION WIN DEVELOP LIMITED | Private company limited by shares | Dissolved |
| DOUBLE UNION LIMITED | Private company limited by shares | Dissolved |
| LAROPA UNION LIMITED | Private company limited by shares | Dissolved |
| RICH UNION HONG KONG INVESTMENT LIMITED | Private company limited by shares | Live |
| UNI-SUCCESS CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Live |
| CHINA INTERNATIONAL GROUP UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| EVER UNIVERSE SYSTEM ENGINEERING (BHM) LIMITED | Private company limited by shares | Live |