| UNION HARBOUR HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION INSURANCE CONSULTANT CO. LIMITED | Private company limited by shares | Dissolved |
| UNION APPAREL INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION ASIA INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| DYNAMIC UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| SMART UNION ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| COOPER UNION COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION ASIA DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION GRACE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| FIRST UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| RICH UNION TRADING LIMITED | Private company limited by shares | Live |
| UNION FOCUS INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION SENSE INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNION LIGHT INDUSTRIES LIMITED | Private company limited by shares | Live |
| UNION SINO LIMITED | Private company limited by shares | Dissolved |
| UNION MEDIA LIMITED | Private company limited by shares | Dissolved |
| HORN UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION WIDE HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION CHINA (ASIA) LIMITED | Private company limited by shares | Dissolved |
| CHEER UNION ENTERPRISE (YUNNAN) LIMITED | Private company limited by shares | Dissolved |
| LINK UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| STAR UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| WIN UNION ENGINEERING LIMITED | Private company limited by shares | Live |
| UNION LUCKY INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNION OF THE SWATOW CHRISTIAN CHURCHES -THE- | Company limited by guarantee | Live |
| UNION GOAL INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION SCORE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| CITY UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION SHINE (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION FIELD LIMITED | Private company limited by shares | Dissolved |
| UNION TECHNOLOGY (CHINA) LIMITED | Private company limited by shares | Dissolved |
| UNION TELECOMMUNICATIONS SERVICES CO. LIMITED | Private company limited by shares | Dissolved |
| EVER UNION LIMITED | Private company limited by shares | Dissolved |
| ON UNION CONSTRUCTION LIMITED | Private company limited by shares | Dissolved |
| MAY UNION LIMITED | Private company limited by shares | Dissolved |
| SOUTH UNION RESTAURANT COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION BRIGHT INTERNATIONAL HOLDING LIMITED | Private company limited by shares | Dissolved |
| UNIONSTAR INTERNATIONAL HOLDING LIMITED | Private company limited by shares | Dissolved |
| WORLD UNION GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION PERFECT DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION PROPERTY AGENCY LIMITED | Private company limited by shares | Dissolved |
| BEST UNION COURIER COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION TRUMP PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION ENGINEERING (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION SHEEN HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION GLASSLAM LIMITED | Private company limited by shares | Dissolved |
| TACT UNION MOTORS LIMITED | Private company limited by shares | Dissolved |
| UNION PACIFIC ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| WEALTHY UNION LIMITED | Private company limited by shares | Dissolved |
| UNION HARVEST HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION ENTERPRISE (HK) LIMITED | Private company limited by shares | Dissolved |
| TRUMP UNION LIMITED | Private company limited by shares | Live |
| UNION TRUMP INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNION WAY TRADING LIMITED | Private company limited by shares | Live |
| CHINA UNION SHIPPING (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION CHINA HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| MAX UNION (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION SOLAR LIMITED | Private company limited by shares | Dissolved |
| BIG UNION LIMITED | Private company limited by shares | Dissolved |
| UNION SUCCESS HOLDINGS LIMITED | Private company limited by shares | Live |
| FORTUNE UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION FAVOUR INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION CHINA LIMITED | Private company limited by shares | Dissolved |
| UNION SUN (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG AIRSOFT SHOOTING UNION LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION TRADING LIMITED | Private company limited by shares | Live |
| UNION WELL (ASIA) LIMITED | Private company limited by shares | Dissolved |
| UNION FASHIONWEAR LIMITED | Private company limited by shares | Dissolved |
| UNIONSTAR INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ON UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNION NET LIMITED | Private company limited by shares | Dissolved |
| UNION (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION SENSE DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION CENTRE LIMITED | Private company limited by shares | Live |
| UNIONFORD LIMITED | Private company limited by shares | Live |
| UNION SINO ENTERPRISES LIMITED | Private company limited by shares | Live |
| DYNAMIC UNION LIMITED | Private company limited by shares | Dissolved |
| BOND UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION FORCE EXPRESS (H.K.) LIMITED | Private company limited by shares | Dissolved |
| NEW UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| GLOBAL UNION INDUSTRIES CO., LIMITED | Private company limited by shares | Live |
| UNION FIDELITY (HONG KONG) LIMITED | Private company limited by shares | Live |
| UNION TRINITY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| FAMOUS UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION SKILL DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION CHERRY LIMITED | Private company limited by shares | Dissolved |
| FULL UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION CAPITAL LIMITED | Private company limited by shares | Dissolved |
| JET UNION LIMITED | Private company limited by shares | Live |
| NEW UNION PHARMACY (CENTRAL) LIMITED | Private company limited by shares | Dissolved |
| UNION BEST LIMITED | Private company limited by shares | Dissolved |
| UNION GLORY ASIA LIMITED | Private company limited by shares | Dissolved |
| CENTURY UNION CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNION TRUMP HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION GOOD LIMITED | Private company limited by shares | Live |
| ADVANCE UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION LUXE LIMITED | Private company limited by shares | Dissolved |
| UNIONTEX LIMITED | Private company limited by shares | Live |
| CITY UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION TIME INVESTMENTS LIMITED | Private company limited by shares | Live |