| UNION WAY INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION HORIZON LIMITED | Private company limited by shares | Live |
| NEW UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION CAPITAL RESOURCES LIMITED | Private company limited by shares | Dissolved |
| SINO UNION INTERNATIONAL ENERGY LIMITED | Private company limited by shares | Dissolved |
| GRACE UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION IMPACT ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION FASHION (HK) INTERNATIONAL GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION SKY INDUSTRIAL (HONGKONG) LIMITED | Private company limited by shares | Dissolved |
| HK UNION FULL HARDWARE PRODUCTION LIMITED | Private company limited by shares | Dissolved |
| Union Tourist Rental Car Limited | Private company limited by shares | Live |
| CHINA BRAND MARKETING UNION LIMITED | Private company limited by shares | Dissolved |
| UNION CHAMPION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| CAPITAL UNION LIMITED | Private company limited by shares | Live |
| Union Electronics Enterprise Company Limited | Private company limited by shares | Dissolved |
| SHEEN UNION LIMITED | Private company limited by shares | Live |
| RISE UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION GAIN FINANCE LIMITED | Private company limited by shares | Dissolved |
| UNION DESIGN LIMITED | Private company limited by shares | Live |
| UNION INDUSTRY LIMITED | Private company limited by shares | Live |
| NEW UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| UNION HONOUR TRADING LIMITED | Private company limited by shares | Live |
| UNION HONOUR TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| UNION FORTUNE HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION RICH INVESTMENTS LIMITED | Private company limited by shares | Live |
| SILVER UNION DEVELOP LIMITED | Private company limited by shares | Dissolved |
| UNION TOP ASIA PACIFIC LIMITED | Private company limited by shares | Dissolved |
| UNION PACIFIC CORPORATION LIMITED | Private company limited by shares | Dissolved |
| CHAMP UNION LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION TRADE (HK) LIMITED | Private company limited by shares | Dissolved |
| GOLD UNION INVESTMENTS HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION STRONG DEVELOPMENT HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| WORLD PETROLEUM RESOURCES UNION INVESTMENT (HOLDINGS) LIMITED -THE- | Private company limited by shares | Dissolved |
| WESTERN UNION GROUP (HK) LIMITED | Private company limited by shares | Live |
| UNION TECH ASIA PACIFIC LIMITED | Private company limited by shares | Dissolved |
| BRIGHT UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| TOP UNION HONG KONG INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SMART UNION GLOBAL LIMITED | Private company limited by shares | Dissolved |
| GLOBAL UNION INTERNATIONAL ENTERPRISE LIMITED | Private company limited by shares | Live |
| BEIBU GULF CAPITAL UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION FINE INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION HOPE (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| GREATEN UNION LIMITED | Private company limited by shares | Dissolved |
| UN ELDER INDUSTRY UNION LIMITED | Private company limited by shares | Dissolved |
| UNION INTERNATIONAL CAPITAL LIMITED | Private company limited by shares | Dissolved |
| BEST UNION HONG KONG DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION FAMOUS ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION VAST LIMITED | Private company limited by shares | Dissolved |
| UNION WIN DEVELOP LIMITED | Private company limited by shares | Dissolved |
| DOUBLE UNION LIMITED | Private company limited by shares | Dissolved |
| LAROPA UNION LIMITED | Private company limited by shares | Dissolved |
| RICH UNION HONG KONG INVESTMENT LIMITED | Private company limited by shares | Live |
| CHINA INTERNATIONAL GROUP UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION CENTURY TECH (HK) CO., LIMITED | Private company limited by shares | Live |
| SOURCE UNION LIMITED | Private company limited by shares | Live |
| UNION OLYMPIC LIMITED | Private company limited by shares | Live |
| XINKENDU UNION LIMITED | Private company limited by shares | Dissolved |
| BEST UNION INVESTMENT (HONG KONG) LIMITED | Private company limited by shares | Live |
| NEW UNION HOME PRODUCTS COMPANY LIMITED | Private company limited by shares | Live |
| UNION CRYSTAL LIMITED | Private company limited by shares | Live |
| SKY UNION LIMITED | Private company limited by shares | Live |
| UNION LIGHT HOLDING (HONGKONG) LIMITED | Private company limited by shares | Dissolved |
| UNION HOPE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| MAGNIFICENT UNION (HONG KONG) LIMITED | Private company limited by shares | Live |
| UNION ASIA RESOURCES LIMITED | Private company limited by shares | Live |
| NEW UNION (ASIA) LIMITED | Private company limited by shares | Dissolved |
| JET UNION GROUP HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION SUCCESS DEVELOP LIMITED | Private company limited by shares | Dissolved |
| UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SINO EURO UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| OCEAN UNION INVESTMENT DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION PROFIT DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION FIELD INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION GLORY SHIP COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION HOPESON (INTERNATIONAL) INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| HONG KONG ASSOCIATION OF PEACE UNION LIMITED | Company limited by guarantee | Live |
| UNION TRADE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| TECH UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| RANK UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| MEGA UNION CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Live |
| HONGKONG HUAYU UNION CO., LIMITED | Private company limited by shares | Dissolved |
| HUNDRED UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| EASE UNION LIMITED | Private company limited by shares | Dissolved |
| UNION WORLD PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| UNION STRONG CORPORATION LIMITED | Private company limited by shares | Dissolved |
| ONE UNION LIMITED | Private company limited by shares | Dissolved |
| UNION CONCEPT INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| LUCKY UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION FORCE CARGO SERVICE LIMITED | Private company limited by shares | Live |
| UNION TRADE CREATION LIMITED | Private company limited by shares | Live |
| FORTUNE UNION CHANNEL LIMITED | Private company limited by shares | Dissolved |
| PRECIOUS UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| TOP UNION (ASIA) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION WORLD ELECTRONICS LIMITED | Private company limited by shares | Live |
| CHINA ART UNION LIMITED | Private company limited by shares | Live |
| UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| HONG KONG UNIONINVEST GROUP LIMITED | Private company limited by shares | Dissolved |
| SW UNION INVESTMENT SERVICE LIMITED | Private company limited by shares | Live |
| RISE UNION GLOBAL LIMITED | Private company limited by shares | Dissolved |
| UNION (KOWLOON) ENGINEERING LIMITED | Private company limited by shares | Live |