| STAR UNION DEVELOPMENT INT'L LIMITED | Private company limited by shares | Dissolved |
| UNION LINK INTERNATIONAL ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| SILVER UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL SHEEN ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNITED TOP LIMITED | Private company limited by shares | Live |
| CHINA UNITED ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION FAMOUS INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION CENTURY ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION SHINY LIMITED | Private company limited by shares | Dissolved |
| UNION CHAMP INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNODOMANI LIMITED | Private company limited by shares | Dissolved |
| JIN TIN UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| Unicblue Asia Limited | Private company limited by shares | Live |
| UNION RISE TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| UNION RISE INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED RIGHT INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNICON GARMENT LIMITED | Private company limited by shares | Dissolved |
| UNITIDE CHINA LIMITED | Private company limited by shares | Dissolved |
| UNISOURCE MANUFACTURING LIMITED | Private company limited by shares | Dissolved |
| UNIFORD ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| NEO UNIVERSE LIMITED | Private company limited by shares | Live |
| GLOBE UNION ENGINEERING LIMITED | Private company limited by shares | Live |
| UNICON INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| GRACE UNION LIMITED | Private company limited by shares | Live |
| Yuen Hoi Underwear Accessories Limited | Private company limited by shares | Dissolved |
| UNITED COSMETIC ASIA LIMITED | Private company limited by shares | Live |
| UNIFIT LIMITED | Private company limited by shares | Live |
| Neworld Universal Co., Limited | Private company limited by shares | Live |
| UNION SUNNY INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIKAR COMPANY LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| WINFAITH UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNIQUE SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| ASIA UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SKY UNIVERSAL LIMITED -THE- | Private company limited by shares | Live |
| UNIVERSE (HK) CO., LIMITED | Private company limited by shares | Live |
| UNION SOLUTION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNION YIELD LIMITED | Private company limited by shares | Dissolved |
| SHENKONG WATCH UNITED ASSOCIATION LIMITED | Private company limited by shares | Live |
| UNION WEALTH INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNI-POWER PROPERTIES LIMITED | Private company limited by shares | Live |
| LEADWIN UNDERWEAR (TRADING) COMPANY LIMITED | Private company limited by shares | Live |
| UNION NATION LIMITED | Private company limited by shares | Live |
| CHINA UNITED SHIPPING LIMITED | Private company limited by shares | Live |
| UNION FORD INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION SUCCESS NEW MATERIAL CO., LIMITED | Private company limited by shares | Live |
| PLUS UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNITED SUNNY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL STAR INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNITED WAY TRANSPORTATION LIMITED | Private company limited by shares | Live |
| LUCK UNION INTERNATIONAL (HK) LIMITED | Private company limited by shares | Dissolved |
| SKY UNION INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION HAPPY LIMITED | Private company limited by shares | Live |
| THINKER UNION (H.K.) TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL MINERALS AND METALS (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION CHOICE INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION STAR TECHNOLOGY (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION EQUITY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| TOP UNION INDUSTRIAL CORP. LIMITED | Private company limited by shares | Live |
| UNION TALENT DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNIONPOWER TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNITED GRAIN TRADE LIMITED | Private company limited by shares | Dissolved |
| UNION KING INDUSTRIAL LIMITED | Private company limited by shares | Live |
| RAINBOW UNION LIMITED | Private company limited by shares | Live |
| UNION RAINBOW LIMITED | Private company limited by shares | Live |
| CHIEF UNION LIMITED | Private company limited by shares | Dissolved |
| UNION EAGLE (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNITED CROWN INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED WEALTH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| MIDLAND UNIVERSITY LIMITED | Private company limited by shares | Live |
| UNITED CHARM LIMITED | Private company limited by shares | Dissolved |
| SKYCREATOR UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| TEAM UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| STRONGBOW UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNION LIGHT INTERNATIONAL LIMITED | Private company limited by shares | Live |
| United Events Limited | Private company limited by shares | Live |
| UNIVERSE INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| ALLIED UNION INSURANCE CONSULTANTS CO., LIMITED | Private company limited by shares | Dissolved |
| UNION LOYAL LIMITED | Private company limited by shares | Live |
| UNICON LIMITED | Private company limited by shares | Live |
| UNICON DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION TREND DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNICON ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNIC INT'L (U.S.A.) BIO PHARM LIMITED | Private company limited by shares | Dissolved |
| UNION PROPERTY AGENCY COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION HARVEST INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNIONLIGHT OPTOELECTRONICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITED ECO ENTERPRISES CO., LIMITED | Private company limited by shares | Dissolved |
| UNIMED MEDICAL INSTITUTE OF LABORATORY DIAGNOSIS AND PATHOLOGY LIMITED | Private company limited by shares | Live |
| UNITED GLORY SHIPPING CO. LIMITED | Private company limited by shares | Dissolved |
| STANDARD UNIFORM GROUP LIMITED -THE- | Private company limited by shares | Dissolved |
| UNION INVESTMENT DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| STEP UNION LIMITED | Private company limited by shares | Live |
| Unison Sports Limited | Private company limited by shares | Dissolved |
| WEALTHY UNION LIMITED | Private company limited by shares | Live |
| UNITED ROOMS HK LIMITED | Private company limited by shares | Live Commenced dormancy on 12-Oct-2009 |
| HONG KONG UNISON LIMITED | Company limited by guarantee | Live |
| JOINT UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNITESOFT-ICTO LIMITED | Private company limited by shares | Dissolved |
| LUCK UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |