| UNION REGISTRARS LIMITED | Private company limited by shares | Live |
| UNION FORCE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION GOOD INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION HEART INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION TEAM INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION VIEW INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION YIELD INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION GATE INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNION HEALTH PRODUCTS LIMITED | Private company limited by shares | Live |
| UNIFIED POWER INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION STAR INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNICOSMIC LIMITED | Private company limited by shares | Dissolved |
| WIDE UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| KIND UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| SUPER UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| KING UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION RADIO SERVICES TRANSPORTATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITED CHINA INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNI-CROWN LIMITED | Private company limited by shares | Dissolved |
| UNITED BISCUITS ASIA PACIFIC LIMITED | Private company limited by shares | Dissolved |
| UNITRADE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED POWER, TOOLS LIMITED | Private company limited by shares | Dissolved |
| UNION KEY LIMITED | Private company limited by shares | Live |
| CHARM UNION LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL RACE LIMITED | Private company limited by shares | Dissolved |
| UNITIME INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL MUSIC PUBLISHING LIMITED | Private company limited by shares | Live |
| UNITONIC LIMITED | Private company limited by shares | Dissolved |
| UNITOW LIMITED | Private company limited by shares | Live |
| UNION HONOUR INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| FOREVER UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION PROPERTY LIMITED | Private company limited by shares | Dissolved |
| UNIDOOR INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION WORTH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| ASIATIC UNION INDUSTRIES LIMITED | Private company limited by shares | Live |
| UNITED STRAITS CONSULTANCY LIMITED | Private company limited by shares | Dissolved |
| UNION CHAMP LIMITED | Private company limited by shares | Live |
| UNICON FOOD SUPPLIES LIMITED | Private company limited by shares | Dissolved |
| UNITECH COMPUTER LIMITED | Private company limited by shares | Dissolved |
| UNI-SIDE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITON TRADING LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL CLUBS LIMITED | Private company limited by shares | Dissolved |
| UNITON INVESTMENT LIMITED | Private company limited by shares | Live |
| UNIONGRADE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION PARTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION OFFICES LIMITED | Private company limited by shares | Dissolved |
| UNION WISE INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNITED PACIFIC GOLD (FE) LIMITED | Private company limited by shares | Dissolved |
| UNIFRIGHT LIMITED | Private company limited by shares | Dissolved |
| UNIBUILD INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL POINT INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIPEX INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION FOND INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION WORTH LIMITED | Private company limited by shares | Dissolved |
| UNIONINN LIMITED | Private company limited by shares | Dissolved |
| LONG UNIVERSE ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNDERGROUND RESEARCH TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL MICROFORM AND REPRODUCTION AGENCIES LIMITED | Private company limited by shares | Dissolved |
| UNIQUENESS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNICORP INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIQUE HANDS LIMITED | Private company limited by shares | Dissolved |
| STANDED UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION WAY DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION HOPE DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION ERA COMPANY LIMITED | Private company limited by shares | Live |
| UNION WAY ENGINEERING CO. LIMITED | Private company limited by shares | Dissolved |
| JOIN UNION COMMERCIAL FINANCE LIMITED | Private company limited by shares | Dissolved |
| JOIN UNION FRUITS & PROVISION COMPANY LIMITED | Private company limited by shares | Dissolved |
| JOIN UNION MARKETING SERVICES LIMITED | Private company limited by shares | Dissolved |
| JOIN UNION REAL ESTATE AGENCY LIMITED | Private company limited by shares | Dissolved |
| UNITED CHAIN LIMITED | Private company limited by shares | Dissolved |
| UNIPLEX INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION POINT INSURANCE SERVICES & INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNDERWRITER SECURITY LIMITED | Private company limited by shares | Live |
| UNDERWEAR WHERE UNDERWEAR LIMITED | Private company limited by shares | Dissolved |
| UNI-CAINE LIMITED | Private company limited by shares | Dissolved |
| MASTER UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIFAITH COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION WELL DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNI-KING TOYS LIMITED | Private company limited by shares | Live |
| UNION FUND INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION FAITH INSURANCE SERVICES LIMITED | Private company limited by shares | Live |
| HONEST UNION LIMITED | Private company limited by shares | Dissolved |
| KING UNION INDUSTRIES LIMITED | Private company limited by shares | Live |
| UNIONFIELD INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| CONTROLLING-TESTING UNION HONG KONG LIMITED | Private company limited by shares | Dissolved |
| UNITED COMPUTER EMBROIDERY LIMITED | Private company limited by shares | Dissolved |
| PLENTY UNION LIMITED | Private company limited by shares | Dissolved |
| UNION D.D.C.(CHINA) LIMITED | Private company limited by shares | Dissolved |
| MAIN UNION LIMITED | Private company limited by shares | Dissolved |
| UNION VICTORY TRADING LIMITED | Private company limited by shares | Live |
| UNIQUE NOVELTY CO. LIMITED | Private company limited by shares | Dissolved |
| UNION-TOP COMPANY LIMITED | Private company limited by shares | Dissolved |
| RICH UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION ICE MANUFACTURING COMPANY LIMITED | Private company limited by shares | Dissolved |
| HOPE UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED WEALTH INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| FULL UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| STAR UNION INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNION FAME DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |