| SUCCESS UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| WISE UNION LIMITED | Private company limited by shares | Live |
| RICH UNITY LIMITED | Private company limited by shares | Dissolved |
| UNITED WAY PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| UNION SPORTS INTERNATIONAL GIFTS CO., LIMITED | Private company limited by shares | Live |
| LONG UNIVERSAL LIMITED | Private company limited by shares | Live |
| ASIA PACIFIC COALITION AGAINST UNSOLICITED COMMERCIAL EMAIL, LIMITED -THE- | Company limited by guarantee | Dissolved |
| UNION CHAMPION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED RICH ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION MARK ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| CAPITAL UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNI-CAPITAL LIMITED | Private company limited by shares | Live |
| HOPEWELL UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| DRAGON UNITY LIMITED | Private company limited by shares | Dissolved |
| UNION BRIGHT INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION CROWN LIMITED | Private company limited by shares | Dissolved |
| UNITED CENTRAL LIMITED | Private company limited by shares | Dissolved |
| NETCOM UNITED LIMITED | Private company limited by shares | Dissolved |
| Union Asia Organic, Limited | Private company limited by shares | Live |
| UNISON INTERNATIONAL ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNITECH ASIA LIMITED | Private company limited by shares | Live |
| CAPITAL UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| UNIFIER LIMITED | Private company limited by shares | Live |
| UNION SUPER INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION TRINITY HOLDINGS LIMITED | Private company limited by shares | Live |
| H&S UNION (HKG) ENTERPRISE CO., LIMITED | Private company limited by shares | Live |
| ASIA UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION GAIN DEVELOPMENT LIMITED | Private company limited by shares | Live |
| EAGLE UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| KING UNION INTERNATIONAL INVESTMENTS LIMITED | Private company limited by shares | Live |
| OVERSEAS UNION FOUNDATION CO., LIMITED | Private company limited by shares | Live |
| UNION PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| B. K. UNITED TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITED PETROLEUM COMPANY LIMITED | Private company limited by shares | Live |
| UNION EXCEL LIMITED | Private company limited by shares | Live |
| UNIVERSAL CONCORD GROUP LIMITED | Private company limited by shares | Dissolved |
| UNITED SANE LIMITED | Private company limited by shares | Live |
| SUN UNION LIMITED | Private company limited by shares | Live |
| UNION TIME DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| CROWN UNITED ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION HEALTH INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNIVERSAL METAL BUTTON MANUFACTURING LIMITED | Private company limited by shares | Live |
| MANSAN UNION LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL RESOURCES LIMITED | Private company limited by shares | Dissolved |
| UNIVERSE ELECTRONICS (H.K.) CO., LIMITED | Private company limited by shares | Live |
| UNIHUNTER LIMITED | Private company limited by shares | Live |
| UNITRADE PACIFIC LIMITED | Private company limited by shares | Live |
| UNI-CHEM INDUSTRIAL TRADING LIMITED | Private company limited by shares | Dissolved |
| UNITED TRANSPORTATION LIMITED | Private company limited by shares | Live |
| UNITREND SHIPPING LIMITED | Private company limited by shares | Dissolved |
| GROUP UNION CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNION RICHLY LIMITED | Private company limited by shares | Dissolved |
| UNIGET DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNICAPITAL GROUP LIMITED | Private company limited by shares | Dissolved |
| WAY UNION LIMITED | Private company limited by shares | Dissolved |
| STAR UNITY LIMITED | Private company limited by shares | Dissolved |
| UNICHEM PACIFIC LIMITED | Private company limited by shares | Live |
| UNION SMART (ASIA) LIMITED | Private company limited by shares | Dissolved |
| UNITED RISING LIMITED | Private company limited by shares | Dissolved |
| UNITED BELL COMPANY LIMITED | Private company limited by shares | Live |
| CHINA STRAITS TRIPLACE EXPERTS ENTERPRISER UNION LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION HEALTH CARE LIMITED | Private company limited by shares | Live |
| HONG KONG UNION TEXTILE CO LIMITED | Private company limited by shares | Live |
| UNICOMP TECHNOLOGY ( HK ) CO., LIMITED | Private company limited by shares | Dissolved |
| CHARTER UNION LIMITED | Private company limited by shares | Dissolved |
| UNION SOLAR LIMITED | Private company limited by shares | Dissolved |
| UNITY FAR EAST LIMITED | Private company limited by shares | Live |
| CANTON UNIVERSAL FAIR GROUP LIMITED | Private company limited by shares | Dissolved |
| SININE UNITED COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNI-VICTORY LIMITED | Private company limited by shares | Dissolved |
| UNION PROPERTIES (HK) LIMITED | Private company limited by shares | Live |
| UNIWAY TRANSPORTATION LIMITED | Private company limited by shares | Live |
| UNIVAL INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNIKA TRADING LIMITED | Private company limited by shares | Dissolved |
| SILVERSTAR UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNITED OIL ASIA PACIFIC COMPANY LIMITED | Private company limited by shares | Live |
| UNITED WIRES COMPANY LIMITED | Private company limited by shares | Live |
| STAR UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION CHAMPION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED FIRST INVESTMENT LIMITED | Private company limited by shares | Live |
| GRAND UNION MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| ABC UNION, LIMITED | Company limited by guarantee | Dissolved |
| UNIPHOS CO LIMITED | Private company limited by shares | Live |
| SUN UNIVERSE (HONG KONG) LIMITED | Private company limited by shares | Live |
| UNI-BRIGHT INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| RIGHT UNION DEVELOPMENT (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| FREELAND UNIVERSAL (HONG KONG) LIMITED | Private company limited by shares | Live |
| OCTOPUS UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| CHINA SHENGDE UNIVERSITY LIMITED | Private company limited by shares | Dissolved |
| UNITY DISPLAY TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| UNITED N. GROUP LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL WELL LIMITED | Private company limited by shares | Dissolved |
| UNIQUE FIRST LIMITED | Private company limited by shares | Dissolved |
| UNIQUE STAND LIMITED | Private company limited by shares | Live |
| ELITE UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| TRIUMPH UNION ENTERPRISE LIMITED | Private company limited by shares | Live |
| EVER UNION LIMITED | Private company limited by shares | Dissolved |
| SKY UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION ZONE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |