| UNITY APPLIANCES MANUFACTORY LIMITED | Private company limited by shares | Dissolved |
| UNION CHINA INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| NICE UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| CHAMP UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| HK UNION INT'L GROUP LIMITED | Private company limited by shares | Dissolved |
| UNI-TOP ASP LIMITED | Private company limited by shares | Dissolved |
| UNION BEST SHIPPING LIMITED | Private company limited by shares | Live |
| UNITED TRANSPORTATION & SERVICE LIMITED | Private company limited by shares | Live |
| UNIVERSAL CELLULAR ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNION COMFORT ADVERTISING LIMITED | Private company limited by shares | Dissolved |
| SMART UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION ALPHA CORPORATE ADVISORY LIMITED | Private company limited by shares | Live |
| UNIMEX MANUFACTURING LIMITED | Private company limited by shares | Live |
| UNION SEA TRANSPORTATION (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| UNION INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Live |
| FORTUNE UNION (HONG KONG) LIMITED | Private company limited by shares | Live |
| UNITED LIGHTING ENTERPRISE COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITED HORIZON LIMITED | Private company limited by shares | Dissolved |
| HONG KONG UNION FOOD PRODUCTS LIMITED | Private company limited by shares | Live |
| UNITED SMART ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL HEALTH CARE LIMITED | Private company limited by shares | Live |
| UNITED TECHNICA LIMITED | Private company limited by shares | Dissolved |
| UNITED J TEXTILES LIMITED | Private company limited by shares | Dissolved |
| UNION LOGISTICS (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNI-WELL PACIFIC LIMITED | Private company limited by shares | Dissolved |
| FORTRESS UNION LIMITED | Private company limited by shares | Dissolved |
| ZHONG MEI UNITED INTERNATIONAL MONETARY INVESTMENT HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| NEW UNIVERSE FUTURES (HK) LIMITED | Private company limited by shares | Live |
| UNI-LAB LIMITED | Private company limited by shares | Live |
| UNITED PACIFIC FINANCE & INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| FAITH UNION ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNION FORTUNE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL MEDICAL ELITE LIMITED | Private company limited by shares | Live |
| UNITED LEADER LIMITED | Private company limited by shares | Dissolved |
| UNION ALPHA LIMITED | Private company limited by shares | Dissolved |
| UNION LAND INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION KINGDOM INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION C-BUTTON CO., LIMITED | Private company limited by shares | Live |
| UNIQUE KENT LIMITED | Private company limited by shares | Live |
| UNIQUE CLASS LIMITED | Private company limited by shares | Live |
| UNIQUE WEALTH INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| ASIA UNITED HELICOPTER GENERAL AERONAUTICAL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| GO TECH (UNITED) LIMITED | Private company limited by shares | Dissolved |
| UNISTAR SALES COMPANY LIMITED | Private company limited by shares | Live |
| UNION PROFIT HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| GREAT UNIVERSE INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION BEAUTY CENTRE LIMITED | Private company limited by shares | Dissolved |
| SINO UNION INTERNATIONAL INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION FAITH ACCOUNTING AND SECRETARIAL LIMITED | Private company limited by shares | Dissolved |
| UNION WIN INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| REALLY PARK UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNION INFO COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITED ESTATE EXCHANGE CO. LIMITED | Private company limited by shares | Live |
| UNICARE HEALTHCARE LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL BASE TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION HERALD LIMITED | Private company limited by shares | Dissolved |
| ENGLISH-SPEAKING UNION (HONG KONG) LIMITED -THE- | Company limited by guarantee | Live |
| GRAND UNIVERSE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| BRIGHT UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| NEW UNIVERSE TECHNOLOGY (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SUN UNION (CHINA) LIMITED | Private company limited by shares | Live |
| UNIC INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| UNI-HONG TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SINO UNION INVESTMENT HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| PARALLEL UNIVERSE LIMITED | Private company limited by shares | Dissolved |
| Universal Champion Trading Limited | Private company limited by shares | Live |
| UNIVERSE VICTORY LIMITED | Private company limited by shares | Dissolved |
| UNI-FAMOUS LIMITED | Private company limited by shares | Dissolved |
| HARVEST UNIVERSAL COMPANY LIMITED | Private company limited by shares | Live |
| TOP UNIVERSAL INVESTMENT LIMITED | Private company limited by shares | Live |
| UNI-PACIFIC MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED VACUUM TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| STRONG UNION LIMITED | Private company limited by shares | Live |
| UNION INSTRUMENTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL PURCHASING AGENT LIMITED | Private company limited by shares | Dissolved |
| MAX UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION CHAMPION LIMITED | Private company limited by shares | Live |
| SUN UNION INDUSTRIAL (HK) LIMITED | Private company limited by shares | Dissolved |
| UNION PLAZA DEVELOPMENT LIMITED | Private company limited by shares | Live |
| RICH UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| GAIN UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION PROFIT METAL PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| UNION WAYS LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL CHINA LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL CENTURY LIMITED | Private company limited by shares | Dissolved |
| EASY UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNITED FLYWAY LIMITED | Private company limited by shares | Dissolved |
| BEST UNION ENGINEERING CO., LIMITED | Private company limited by shares | Live |
| UNIRESOURCES (HK) LIMITED | Private company limited by shares | Dissolved |
| SCIENTIFIC UNITED LIMITED | Private company limited by shares | Dissolved |
| UNISMART ASIA LIMITED | Private company limited by shares | Live |
| UNI-CAPITAL DEVELOPMENT LIMITED | Private company limited by shares | Live |
| RIGHT UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNIGLOBAL SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| UNION RIGHT (HK) LIMITED | Private company limited by shares | Dissolved |
| UNIVERSE INVESTMENT LIMITED | Private company limited by shares | Live |
| CHARM UNION LIMITED | Private company limited by shares | Dissolved |
| UNION KING INTERNATIONAL HOLDING LIMITED | Private company limited by shares | Dissolved |
| SHEEN UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| HKC UNITED LIMITED | Private company limited by shares | Dissolved |