| UNITECH ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION EASE DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION VIEW TRADING LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL BEST TRADING LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL WELL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNITED BASE LIMITED | Private company limited by shares | Dissolved |
| UNION TRADE INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION SMART INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNION WIDE TRADING LIMITED | Private company limited by shares | Dissolved |
| UNITED WIN INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION WELL (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION FIRST INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION (SINO-HK) TRANSPORTATION LIMITED | Private company limited by shares | Dissolved |
| WHALE UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| QI UNION COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITED WAY INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED SUCCESS TRADING LIMITED | Private company limited by shares | Live |
| BEST UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION WIDE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION GARDEN HOLDINGS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNIBACS CO. LIMITED | Private company limited by shares | Dissolved |
| UNICO SHIPPING LIMITED | Private company limited by shares | Dissolved |
| SINO UNION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| NG CHOW UNION INT'L LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL PROPERTY AGENCY LIMITED | Private company limited by shares | Live |
| STATE UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNITED WAY ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNION FAIR & TRADE COMPANY LIMITED | Private company limited by shares | Live |
| SINO UNION INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED EXTRUDERS LIMITED | Private company limited by shares | Dissolved |
| NICE UNION ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| ASIA UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| OPEN UNIVERSITY OF HONG KONG LIMITED -THE- | Private company limited by shares | Dissolved |
| UNIVERSAL VICTORY INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| GENIUS UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| RIGHT UNIVERSE COMPANY LIMITED | Private company limited by shares | Dissolved |
| GLOBAL UNION (HONG KONG) LIMITED | Private company limited by shares | Live |
| UNION MASS INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION VIEW ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION ADVERTISING PRODUCTION LIMITED | Private company limited by shares | Dissolved |
| HILL UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| LOYAL UNION LIMITED | Private company limited by shares | Live |
| UNIVERSAL SMART LIMITED | Private company limited by shares | Live |
| UNIVERSAL SMART INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL GROUP HOLDING LIMITED | Private company limited by shares | Dissolved |
| UNISON INTERIOR CONTRACTING COMPANY LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNITED GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION TRADE HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNITED TARGET LIMITED | Private company limited by shares | Dissolved |
| CHEER UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION ENTERTAINMENT LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNIQUE COMPANY LIMITED | Private company limited by shares | Dissolved |
| WELL UNITED ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNIMASS INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SMART UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNITY VENTURE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL TECHNIC LIMITED | Private company limited by shares | Live |
| UNION GOLD LIMITED | Private company limited by shares | Dissolved |
| GLOBAL UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| NEW UNIVERSAL BRASS WARE FACTORY COMPANY LIMITED | Private company limited by shares | Live |
| UNION BEST ENGINEERING LIMITED | Private company limited by shares | Live |
| UNIVERSE CROWN INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| BROAD UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNISON TRANSPORTATION LIMITED | Private company limited by shares | Dissolved |
| UNION SMART (H.K.) LIMITED | Private company limited by shares | Live |
| UNIVERSAL GAIN LIMITED | Private company limited by shares | Dissolved |
| UNION ENTERTAINMENT CLUB LIMITED | Private company limited by shares | Dissolved |
| EXTRA UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| ASIAN UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| ASIAN UNION LIMITED | Private company limited by shares | Live |
| UNIMART INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITY PACIFIC LIMITED | Private company limited by shares | Dissolved |
| UNITY OVERSEAS LIMITED | Private company limited by shares | Dissolved |
| UNITED RANK INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL JET LIMITED | Private company limited by shares | Dissolved |
| UNITED BEST ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNITED HONEST TRADING LIMITED | Private company limited by shares | Dissolved |
| UNITED WELL SHIPPING LIMITED | Private company limited by shares | Dissolved |
| TIME UNION LIMITED | Private company limited by shares | Dissolved |
| BEAUTY UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| BEAUTY UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION MART TRADING LIMITED | Private company limited by shares | Dissolved |
| JOIN UNION BUILDING MATERIALS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITED MERCHANDISING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNISON KNITTING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION TELETECH COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION VICTORY INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| STATE UNION CHEMICALS CO LIMITED | Private company limited by shares | Dissolved |
| UNION REGAL LIMITED | Private company limited by shares | Live |
| UNION TALENT DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION TALENT INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| DOLLAR UNION LIMITED | Private company limited by shares | Live |
| UNION FUND DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| FUZHOU UNIVERSAL HIGH TECHNIQUE PULSE WAVE LIMITED | Private company limited by shares | Dissolved |
| ORIENT UNION FREIGHT SERVICES COMPANY LIMITED | Private company limited by shares | Dissolved |
| GLORY FORCE BRASSIERES & UNDERWEAR LIMITED | Private company limited by shares | Live |
| UNIVERSAL ENTERTAINMENT PRODUCTION AGENT LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL HORIZON INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL HORIZON LIMITED | Private company limited by shares | Dissolved |