| UNITED SCORE LIMITED | Private company limited by shares | Live |
| UNITECH ENERGY RESOURCES LIMITED | Private company limited by shares | Live |
| UNITECH ENERGY TOOLS LIMITED | Private company limited by shares | Live |
| BEST UNION RESOURCES LIMITED | Private company limited by shares | Dissolved |
| UNIQUE FASHIONS WEAR LIMITED | Private company limited by shares | Live |
| BEAUTY UNION INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Live |
| PLUS UNITED LIMITED | Private company limited by shares | Dissolved |
| UNIQUE WATCH COMPANY LIMITED | Private company limited by shares | Live |
| UNISMART (HK) CO., LIMITED | Private company limited by shares | Live |
| UNION CENTURY ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION VENTURE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| JC UNION MARINE CO., LIMITED | Private company limited by shares | Live |
| TARGET UNION CONSULTANTS CO., LIMITED | Private company limited by shares | Live |
| NINGBO UNITOL TOOLS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSE INTERNATIONAL Cosmetic Co., Limited | Private company limited by shares | Live |
| UNION GAIN CORPORATION LIMITED | Private company limited by shares | Live |
| Union Deluxe International Investment Limited | Private company limited by shares | Live |
| KINGFORT UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNION HARVEST ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL ASIA TRADING INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| GREEN UNION GROUP LIMITED | Private company limited by shares | Live |
| UNION CHIP TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNIQUE CARPET LIMITED | Private company limited by shares | Live |
| ALLIED UNIVERSAL LIMITED | Private company limited by shares | Live |
| CHINA UNIVERSE INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| WEST UNION LEATHER CO., LIMITED | Private company limited by shares | Live |
| China Investors United Limited | Private company limited by shares | Dissolved |
| European Union Fund Management Group Limited | Private company limited by shares | Live |
| UNIVERSAL CHAIN MANAGEMENT, LIMITED | Private company limited by shares | Live |
| NAGI SPIRITS UNIVERSAL NOODLE LIMITED | Private company limited by shares | Live |
| UNION RIGHT LIMITED | Private company limited by shares | Live |
| MILLIONS UNION INTERNATIONAL CAPITAL LIMITED | Private company limited by shares | Live |
| BRIGHT UNION INVESTMENT DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION ASSETS LIMITED | Private company limited by shares | Live |
| UNION ACHIEVE LIMITED | Private company limited by shares | Live |
| United Nations Education Science Culture Organization Children Education Research Center Limited | Private company limited by shares | Dissolved |
| UNION BROTHER INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| OFA UNIQUE LIMITED | Private company limited by shares | Live |
| UNIVERSE GROUP TRADING CO., LIMITED | Private company limited by shares | Live |
| UNITED CAPITAL INVESTMENT LIMITED | Private company limited by shares | Live |
| New Star United Limited | Private company limited by shares | Dissolved |
| UNION SMART CAPITAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL TRADE INC. LIMITED | Private company limited by shares | Live |
| Universe International Packing Co., Limited | Private company limited by shares | Dissolved |
| KING UNION GROUP LIMITED | Private company limited by shares | Live |
| UNIT16 LIMITED | Private company limited by shares | Live |
| NEW UNION IMPORT & EXPORT LIMITED | Private company limited by shares | Live |
| GREAT UNION CAPITAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL ASIA HONG KONG GROUP LIMITED | Private company limited by shares | Live |
| UNIONS HONG KONG ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| United Business Associates Limited | Private company limited by shares | Dissolved |
| EUROPEAN UNION INTERNATIONAL INDUSTRIAL CO., LIMITED | Private company limited by shares | Live Commenced dormancy on 22-Jun-2015 |
| LIJU UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNITALY LIMITED | Private company limited by shares | Live |
| UNION LOGISTICS (HK) LIMITED | Private company limited by shares | Live |
| Fame Union Production Limited | Private company limited by shares | Live |
| HONG KONG EMPEROR UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| MAX UNION WORLDWIDE LIMITED | Private company limited by shares | Live |
| UNION LUCK GROUP HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION STAR GROUP HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| NEW MARK UNIVERSAL LIMITED | Private company limited by shares | Live |
| WORLD FAMOUS UNIVERSITIES INVESTMENT HOLDING GROUP (HK) LIMITED | Private company limited by shares | Dissolved |
| United Pet Supply Co., Limited | Private company limited by shares | Live |
| LUXURY (CHINA) UNION CO., LIMITED | Private company limited by shares | Dissolved |
| UNION ART LIMITED | Private company limited by shares | Live |
| UNITED STATES MINISUDA LUBRICANT (GROUP) CO., LIMITED | Private company limited by shares | Live |
| Uncork New York Limited | Private company limited by shares | Live |
| INTERNATIONAL PRIVATE HOLDING INVESTMENT UNION (CHINA) LIMITED | Private company limited by shares | Live |
| MASTER UNION TECHNOLOGY (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION GRAND CORPORATION LIMITED | Private company limited by shares | Live |
| TIME WORKPLACE UNIVERSAL COMPANY LIMITED | Private company limited by shares | Live |
| XINCHENGDA UNIVERSAL TRADING LIMITED | Private company limited by shares | Live |
| Chinese Enterprise Union Limited | Private company limited by shares | Dissolved |
| ARF UNITED LIMITED | Private company limited by shares | Live |
| UNION PACK INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNITED ASIA COMMERCIAL LIMITED | Private company limited by shares | Live |
| Universal Metal Work Limited | Private company limited by shares | Live |
| UNION RED LIMITED | Private company limited by shares | Live |
| CHINA INVESTORS UNION GROUP CO., LIMITED | Private company limited by shares | Live |
| SAFE UNION LIMITED | Private company limited by shares | Live |
| UNIVERSAL MARK LIMITED | Private company limited by shares | Dissolved |
| UNION FIRST LIMITED | Private company limited by shares | Live |
| UNITED FAST LIMITED | Private company limited by shares | Dissolved |
| UNION WEALTH HONG KONG HOLDINGS LIMITED | Private company limited by shares | Live |
| WELL UNION INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Dissolved |
| TIANHE UNION (HK) HOLDINGS LIMITED | Private company limited by shares | Live |
| GRAND UNIVERSE INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNION HONG KONG DEVELOPMENT LIMITED | Private company limited by shares | Live |
| HONGKONG LOVE WIFE (INTERNATIONAL) UNDERWEAR INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| EXHIBITION UNION GROUP COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSE TIRAY CO., LIMITED | Private company limited by shares | Live |
| Universe Brother Holding Limited | Private company limited by shares | Live |
| KEY UNION LIMITED | Private company limited by shares | Live |
| SUCCESS UNIVERSE CORPORATION LIMITED | Private company limited by shares | Live |
| Union Mountains Company Limited | Private company limited by shares | Live |
| UNITED GRACE ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| NEW UNION INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Live |
| CREATIVE UNITED COMPANY LIMITED | Private company limited by shares | Live |
| UNION TECNOLOGIA CONSULTING LIMITED | Private company limited by shares | Live |
| United Success Supply Limited | Private company limited by shares | Dissolved |