| UNION STOCK COMPANY LIMITED | Private company limited by shares | Live |
| UNIVERSAL SOURCING COMPANY LIMITED | Private company limited by shares | Live |
| UNION LEADER TRADING LIMITED | Private company limited by shares | Live |
| STAR UNITED LIMITED | Private company limited by shares | Live |
| United Umbrella Limited | Private company limited by shares | Live |
| AA UNITED CAPITAL LIMITED | Private company limited by shares | Dissolved |
| HARMONIOUS UNION LIMITED | Private company limited by shares | Live |
| UNITED SKY (CHINA) LIMITED | Private company limited by shares | Live |
| ASIAN UNION INT'L BUSINESS CO., LIMITED | Private company limited by shares | Dissolved |
| UNION FAITH (H.K.) LIMITED | Private company limited by shares | Live |
| STAR UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNIVERSAL RETAIL LIMITED | Private company limited by shares | Live |
| UNITEK ASIA LIMITED | Private company limited by shares | Live |
| UNION BRIGHT INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| UNITED PEACE LIMITED | Private company limited by shares | Live |
| HONG KONG WONDER UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| BONEX UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNISMART INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION SUCCESS GARMENT LIMITED | Private company limited by shares | Dissolved |
| UNION BEST INDUSTRIAL (HK) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIVEX HOLDING LIMITED | Private company limited by shares | Dissolved |
| YIDE (UNION) INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Live |
| UNION RISE HK CORPORATE LIMITED | Private company limited by shares | Live |
| AP's UNION LIMITED | Private company limited by shares | Dissolved |
| UNION BRIGHT INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| OCEAN UNION (ASIA) LIMITED | Private company limited by shares | Live |
| UNION TREND LIMITED | Private company limited by shares | Live |
| NINGBO UNITED MOTOR CO., LIMITED | Private company limited by shares | Live |
| VINE MATE UNIVERSAL RESOURCES LIMITED | Private company limited by shares | Live |
| WISE UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNITED-DESIGNERS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| 22nd Century Universal Investment Company Limited | Private company limited by shares | Dissolved |
| UNITED-HOBBY TECH CO., LIMITED | Private company limited by shares | Dissolved |
| UNIGOLD ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNIGOLD INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| YOGA UNION ASIA-PACIFIC CO., LIMITED | Private company limited by shares | Dissolved |
| UNITED CREATIVE LIMITED | Private company limited by shares | Dissolved |
| 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 |
| 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 |