| UNION FAIR LIMITED | Private company limited by shares | Dissolved |
| UNITED UNION LIMITED | Private company limited by shares | Live |
| UNIBEST LIMITED | Private company limited by shares | Live |
| UNION KENT LIMITED | Private company limited by shares | Live |
| UNION & ASSOCIATES LIMITED | Private company limited by shares | Live |
| UNION TRADING (FAR EAST) CO. LIMITED -THE- | Private company limited by shares | Dissolved |
| UNIFUL LIMITED | Private company limited by shares | Dissolved |
| UNION CROWN INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNIGREEN INVESTMENT LIMITED | Private company limited by shares | Live |
| UNI-PACIFIC ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| KNOWLEDGE UNLIMITED LIMITED | Private company limited by shares | Dissolved |
| WUI TUNG UNITED SHIPPING LIMITED | Private company limited by shares | Dissolved |
| UNCLEBID.COM LIMITED | Private company limited by shares | Dissolved |
| WIN UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNI-PACIFIC INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL SCIENTIFIC COMPONENTS, LIMITED | Private company limited by shares | Dissolved |
| UNITED OIL COMPANY LIMITED | Private company limited by shares | Dissolved |
| AMT UNION COMPANY LIMITED | Private company limited by shares | Live |
| UNION TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| UNION LINK TRADING LIMITED | Private company limited by shares | Live |
| GOOD UNION CONSTRUCTION (HK) COMPANY LIMITED | Private company limited by shares | Live |
| HONEST UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL RAY LIMITED | Private company limited by shares | Dissolved |
| UNI-POINT LIMITED | Private company limited by shares | Dissolved |
| UNITY INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| LINK UNION CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNION ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| UNION SMART TRADING LIMITED | Private company limited by shares | Dissolved |
| STARLITE UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNIVERSE SKY INVESTMENT LIMITED | Private company limited by shares | Live |
| STARPOINT UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNITED CAR COMPANY LIMITED | Private company limited by shares | Live |
| UNIVERSE INTERNATIONAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SMART UNION GROUP LIMITED | Private company limited by shares | Live |
| Nanyang Universal Investment Company Limited | Private company limited by shares | Dissolved |
| UNION HONEST (HONG KONG) LIMITED | Private company limited by shares | Live |
| UNIVERSAL FORTUNE ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNION CROWN ENTERPRISES LIMITED | Private company limited by shares | Live |
| NORTH DISTRICT PRIVATE DOCTORS UNION LIMITED | Private company limited by shares | Dissolved |
| UNION WORLDWIDE LIMITED | Private company limited by shares | Dissolved |
| SKY UNICORN LIMITED | Private company limited by shares | Dissolved |
| UNION BRIGHT DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNI-SUCCESS LIMITED | Private company limited by shares | Live |
| UNIVERSAL CENTURY COMMERCIAL LIMITED | Private company limited by shares | Dissolved |
| UNIWORKS COMPANY LIMITED | Private company limited by shares | Live |
| UNI-FAIR TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| FORE UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNI-CITY LIMITED | Private company limited by shares | Dissolved |
| UNI-WORLDWIDE LIMITED | Private company limited by shares | Live |
| UNIDIGI COMPANY LIMITED | Private company limited by shares | Dissolved |
| WIDE UNION ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNIQUE DIGITAL TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIPROSPER LIMITED | Private company limited by shares | Live |
| CHINA CYBER UNIVERSITY LIMITED | Private company limited by shares | Live |
| NEW UNION PRECISION INDUSTRIAL (H.K.) LIMITED | Private company limited by shares | Live |
| GRAND CENTURY UNIVERSAL LIMITED | Private company limited by shares | Live |
| HONOR UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNI-FAME HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| FAITHFUL UNITED LIMITED | Private company limited by shares | Dissolved |
| UNITY CONCEPT LIMITED | Private company limited by shares | Live |
| UNITED OCEAN ASIA LIMITED | Private company limited by shares | Dissolved |
| CHEER UNION CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNICO JEWELLERY LIMITED | Private company limited by shares | Live |
| LUCKY UNIVERSE LIMITED | Private company limited by shares | Dissolved |
| UNI-VANTAGE HYGIENE PRODUCTS LIMITED | Private company limited by shares | Live |
| GOLD UNION MOTOR CAR TRADING LIMITED | Private company limited by shares | Dissolved |
| UNITECH NETWORKS (CHINA) LIMITED | Private company limited by shares | Dissolved |
| KEEN UNION INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION PHARMACEUTICAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITED LIFTECH COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION INTERNATIONAL TRAVELS & TOURS (HK) LIMITED | Private company limited by shares | Dissolved |
| UNION GROUP TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| SMART UNIVERSE LIMITED | Private company limited by shares | Dissolved |
| UNION INTERNATIONAL RESOURCE DEVELOPMENT HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNITECH ASIA PACIFIC LIMITED | Private company limited by shares | Live |
| LEE WAH (UNION) COMPANY LIMITED | Private company limited by shares | Dissolved |
| GREEN UNION M. & E. (SHANGHAI) COMPANY LIMITED | Private company limited by shares | Live |
| UNION GULF RESOURCES, LIMITED | Private company limited by shares | Live |
| CHAMP UNION LIMITED | Private company limited by shares | Dissolved |
| UNION SUCCESS (ASIA) LIMITED | Private company limited by shares | Dissolved |
| UNITAC INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNIONSTAR CHEMICALS COMPANY LIMITED | Private company limited by shares | Dissolved |
| EVER UNION ENTERPRISE LIMITED | Private company limited by shares | Live |
| UNITED PACIFIC INVESTMENT LIMITED | Private company limited by shares | Live |
| UNI-TECH INTERNATIONAL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNION CHAMPION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION TECH TRADING LIMITED | Private company limited by shares | Dissolved |
| SKY UNITED LIMITED | Private company limited by shares | Live |
| UNITED NET LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL PROSPEROUS INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| NATION UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| NOBLE UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION VANTAGE HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION CREATIVE LIMITED | Private company limited by shares | Dissolved |
| GAIN UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNIGAINFUL LIMITED | Private company limited by shares | Live |
| CHEER UNION AGRICULTURAL DEVELOPMENT (YUNNAN) LIMITED | Private company limited by shares | Dissolved |
| ASIA UNION SATELLITE TV COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION QUARRY 101 LIMITED | Private company limited by shares | Dissolved |
| UNISON LOGISTICS (H.K.) LIMITED | Private company limited by shares | Live |