| UNITED MORAL LIMITED | Private company limited by shares | Dissolved |
| UNITED MERCHANDISE LIMITED | Private company limited by shares | Live |
| USA UNION INTERNATIONAL BIOFERTILIZER LIMITED | Private company limited by shares | Live |
| RICH UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| LEX UNITED LIMITED | Private company limited by shares | Dissolved |
| NEW UNION INC. LIMITED | Private company limited by shares | Dissolved |
| ASIA UNITED ENTERPRISES COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITED NATIONS EMERGENCY RELIEF CENTER CO., LIMITED | Private company limited by shares | Dissolved |
| UNISON DEVELOPMENT (ASIA) LIMITED | Private company limited by shares | Live |
| UNISMART INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Universal Power Dynamic Investment Limited | Private company limited by shares | Live |
| FIRST UNION INTERNATIONAL INDUSTRIAL LIMITED | Private company limited by shares | Live |
| Noble Union Investment Holdings Limited | Private company limited by shares | Dissolved |
| UNION PEAK (HONG KONG) LIMITED | Private company limited by shares | Live |
| LIBRA UNION (HK) INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED STATES OBALU PETROLEUM PRODUCTS CO., LIMITED | Private company limited by shares | Dissolved |
| VICTORY UNION GROUP INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| UNION HI-TECH LIMITED | Private company limited by shares | Live |
| GLORY UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION DEVELOPMENT GROUP HOLDINGS LIMITED | Private company limited by shares | Live |
| UNStudio Asia Limited | Private company limited by shares | Live |
| UNION SKY ASIA INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED SURPLUS PROPERTIES LIMITED | Private company limited by shares | Live |
| CHINA UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| HONG KONG UNION SERVICES DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION BASE FAR EAST LIMITED | Private company limited by shares | Live |
| JOIN UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION TOP MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| CHINA VETERANS UNION VENTURE GROUP LIMITED | Private company limited by shares | Dissolved |
| GRAND UNITED LIMITED | Private company limited by shares | Dissolved |
| UNITED ENTERPRISES (ASIA) CO., LIMITED | Private company limited by shares | Live |
| UNILLY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| FRANCE UNIROCK COSMETICS LIMITED | Private company limited by shares | Live |
| UNION NUTRITION LIMITED | Private company limited by shares | Live |
| UNIVERSAL HARVESTER LIMITED | Private company limited by shares | Live |
| UNION MASTER TRADING LIMITED | Private company limited by shares | Live |
| WISDOM CREATIVITY UNION GROUP CO., LIMITED | Private company limited by shares | Live |
| UNION MATERIAL CO., LIMITED | Private company limited by shares | Live |
| UNION PERFECT INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Ivy Union Limited | Private company limited by shares | Dissolved |
| UniStrong Investment Limited | Private company limited by shares | Dissolved |
| UNITECH MATERIAL LIMITED | Private company limited by shares | Live |
| UNIQUE BBP ASIA LIMITED | Private company limited by shares | Live |
| R2 Union Financial Holdings Limited | Private company limited by shares | Live |
| UNION GAIN TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| ETERNAL UNION (HK) LIMITED | Private company limited by shares | Live |
| UNION SOURCES INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| BEAUTY UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| HK GL UNION LIMITED | Private company limited by shares | Dissolved |
| TALENT UNION TRADING LIMITED | Private company limited by shares | Live |
| UNITED WORLD FINANCIAL INVESTMENT MANAGEMENT GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION SUCCESS HONG KONG INVESTMENT LIMITED | Private company limited by shares | Live |
| FULL BASE UNION ENTERPRISE CO. LIMITED | Private company limited by shares | Dissolved |
| CHENG HAI TOYS ENTERPRISE UNION LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL ENERGY TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| NUAGE UNION LIMITED | Private company limited by shares | Live |
| UNION CHINA HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION STAR TEXTILE LIMITED | Private company limited by shares | Live |
| UNION TECHNOLOGY GROUP LIMITED | Private company limited by shares | Live |
| UNION SPORTS WEAR (INT'L) LIMITED | Private company limited by shares | Dissolved |
| UNION MADE GLOBAL LIMITED | Private company limited by shares | Live |
| CARLOS UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNIQUE ENTERPRISE LIMITED | Private company limited by shares | Live |
| MEGA UNION WORLDWIDE LIMITED | Private company limited by shares | Dissolved |
| HONGKONG UNIFIED INT'L GROUP SHARES CO., LIMITED | Private company limited by shares | Dissolved |
| SOLAR UNION HOLDING LIMITED | Private company limited by shares | Live |
| UNITED WESTERN INVESTORS, LIMITED | Private company limited by shares | Dissolved |
| GLOBAL UNIVERSE GROUP LIMITED | Private company limited by shares | Live |
| KEKESHUNI UNDERWEAR LIMITED | Private company limited by shares | Dissolved |
| UNION CENTURY (HONG KONG) TRADING LIMITED | Private company limited by shares | Live |
| UNITED CHINA LOGISTIC LIMITED | Private company limited by shares | Live |
| W&K UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNI-BRIGHT SHIPPING LIMITED | Private company limited by shares | Dissolved |
| UNIGEM (HK) LIMITED | Private company limited by shares | Dissolved |
| Novaelectri Unipersonal Limited | Private company limited by shares | Dissolved |
| DRAGON UNION LIMITED | Private company limited by shares | Live |
| GREAT UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| NEW UNION (HK) ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL CONSTRUCTION EQUIPMENT&MATERIAL CO., LIMITED | Private company limited by shares | Dissolved |
| TANK UNION LIMITED | Private company limited by shares | Live |
| Unitek Components Limited | Private company limited by shares | Live |
| UP (University Placements) Limited | Private company limited by shares | Dissolved |
| UNIK METAL COMPANY LIMITED | Private company limited by shares | Live |
| UNION ROADWAY LIMITED | Private company limited by shares | Live |
| UNICORP COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIMEDIA LIMITED | Private company limited by shares | Dissolved |
| WELL UNION GLOBAL LIMITED | Private company limited by shares | Dissolved |
| UNION MIND (HOLDING) LIMITED | Private company limited by shares | Live |
| UNDERCOVER MOTHER LIMITED | Private company limited by shares | Dissolved |
| UNI-CON IMPEX (H.K.) LIMITED | Private company limited by shares | Live |
| EAST SUNRISE UNION SHIPPING CO., LIMITED | Private company limited by shares | Dissolved |
| SILVER UNION GRAINS LIMITED | Private company limited by shares | Dissolved |
| FORTUNE UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| RICH UNION MANAGEMENT ASIA LIMITED | Private company limited by shares | Dissolved |
| Union Apex Mega Shipping Limited | Private company limited by shares | Live |
| UNION ARTS INVESTMENT MANAGEMENT CO., LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL GROUP CERAMICS LIMITED | Private company limited by shares | Live |
| ELEGANT UNION LIMITED | Private company limited by shares | Live |
| UNITED EFFORT LIMITED | Private company limited by shares | Live |
| STAR UNION INDUSTRIES LIMITED | Private company limited by shares | Dissolved |