| UNION WORLD CONSTRUCTION MATERIALS COMPANY LIMITED | Private company limited by shares | Dissolved |
| BEST UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIGAS COMPANY LIMITED | Private company limited by shares | Live |
| WORLD CULTURE MEDICAL UNION LIMITED | Private company limited by shares | Dissolved |
| UNION BRIGHT (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION LIGHT INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION PLUS DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED RIVER LIMITED | Private company limited by shares | Dissolved |
| FOCUS UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| TEAM UNION INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNION PLUS INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNISON EAGLE LIMITED | Private company limited by shares | Dissolved |
| PEARL UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| LINK UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNITED ASSOCIATES ASIA LIMITED | Private company limited by shares | Live |
| PINE UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| PROSPER UNION LIMITED | Private company limited by shares | Dissolved |
| OCEAN UNION SEAFOOD HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNITED STRENGTH TRADING LIMITED | Private company limited by shares | Live |
| UNITRADE RESOURCES LIMITED | Private company limited by shares | Live |
| UNION CAPITAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION GRAND LIMITED | Private company limited by shares | Live |
| UNION CONCORD HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| SURVEY UNION ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION WISE (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION (ASIA) LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL PACIFIC INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNIWELL ASIA LIMITED | Private company limited by shares | Dissolved |
| UNION PLACE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION GLORY E & M CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNION GLORY E & M ENGINEERING LIMITED | Private company limited by shares | Live |
| UNION FANTASY LIMITED | Private company limited by shares | Live |
| UNION STATES INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL EXPRESS (FASHION) LIMITED | Private company limited by shares | Live |
| MEGA UNIVERSE LIMITED | Private company limited by shares | Dissolved |
| EXPRESS UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| EVER UNION (PO YUEN) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL MANUFACTURING COMPANY LIMITED | Private company limited by shares | Dissolved |
| FORTRESS PRECAST UNITS LIMITED | Private company limited by shares | Live |
| UNISON KINGDOM LIMITED | Private company limited by shares | Dissolved |
| UNION TOOL HONG KONG LIMITED | Private company limited by shares | Live |
| UNITED RICH TRADING LIMITED | Private company limited by shares | Live |
| UNION PACIFIC DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNIPRESS LIMITED | Private company limited by shares | Dissolved |
| UNION PACIFIC INSURANCE AGENCY LIMITED | Private company limited by shares | Live |
| UNION SKY (HONG KONG) LIMITED | Private company limited by shares | Live Commenced dormancy on 06-Jan-2012 |
| UNION FORD (ASIA) LIMITED | Private company limited by shares | Dissolved |
| T. C. UNION (CHINA) LIMITED | Private company limited by shares | Live |
| UNION CATHAY TRADING LIMITED | Private company limited by shares | Live |
| UNI-PACIFIC TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION EARTH LIMITED | Private company limited by shares | Dissolved |
| JOYFUL UNION LIMITED | Private company limited by shares | Dissolved |
| WISE UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION HOPE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNITED PEAK INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION FIRE SAFETY LIMITED | Private company limited by shares | Live |
| UNION CAPITAL INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNITED AI TECHNOLOGY CO. LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL EXPORT (FE) LIMITED | Private company limited by shares | Dissolved |
| UNION RICH RESOURCES LIMITED | Private company limited by shares | Live |
| INTERFORM THREE UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION PRECISION TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| UNION FORTUNE INVESTMENT LIMITED | Private company limited by shares | Live |
| CHINA UNITED RESOURCES CO. LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL ENTERPRISE (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| CROWN UNION ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNION WORLD SHIPPING LIMITED | Private company limited by shares | Dissolved |
| UNIPOWER LIMITED | Private company limited by shares | Dissolved |
| UNI-ROCK LIMITED | Private company limited by shares | Dissolved |
| UNIREGENT LIMITED | Private company limited by shares | Dissolved |
| UNION CITY CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNION SKY HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| GREEN UNIVERSE LIMITED | Private company limited by shares | Dissolved |
| SHEEN UNION LIMITED | Private company limited by shares | Dissolved |
| CHINA-JAPAN FEIDA UNION (HOLDINGS) COMPANY LIMITED | Private company limited by shares | Live |
| EAST UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| NEW UNIVERSE (HONG KONG) TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL PROPERTIES INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION WAVE LIMITED | Private company limited by shares | Dissolved |
| GOOD UNION CONSTRUCTION AND DECORATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION TRUMP (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| BEST UNIVERSE LIMITED | Private company limited by shares | Dissolved |
| UNIVEST LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL MASTERING PRODUCTION LIMITED | Private company limited by shares | Dissolved |
| UNICOPE THERMAL PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| SUPERIOR UNION AUTO SERVICES COMPANY LIMITED | Private company limited by shares | Dissolved |
| EVER UNIVERSE LIMITED | Private company limited by shares | Dissolved |
| UNION HARBOUR INTERNATIONAL LIMITED | Private company limited by shares | Live |
| FORTUNE UNITY (ASIA) LIMITED | Private company limited by shares | Dissolved |
| GOLD UNIVERSE INTERNATIONAL TRAVEL COMPANY LIMITED | Private company limited by shares | Live |
| GRAND UNIVERSE ACCOUNTANCY & SECRETARIAL LIMITED | Private company limited by shares | Live |
| TECHNOLOGY UNITED NETWORKS LIMITED | Private company limited by shares | Dissolved |
| UNISON CONTRACTING LIMITED | Private company limited by shares | Live |
| UNION TRANSPORTATION AND STEVEDORE COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION ELITE LIMITED | Private company limited by shares | Dissolved |
| UNIFUND (CHINA) CAPITAL LIMITED | Private company limited by shares | Live |
| UNION TRADING (INTERNATIONAL) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL EXPORTS LIMITED | Private company limited by shares | Live |
| UNICON (1998) TRADING LIMITED | Private company limited by shares | Dissolved |