| SKY UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| WORLD UNION INTERNATIONAL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION CAPITAL INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION GLOBAL LIMITED | Private company limited by shares | Dissolved |
| FINE UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION SHEEN HONG KONG LIMITED | Private company limited by shares | Dissolved |
| UNION ASIA INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION CROSS INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| ASIA UNION (HK) TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION DRAGON APPLIANCES LIMITED | Private company limited by shares | Dissolved |
| UNION MARINE SEAFOOD TRADING LIMITED | Private company limited by shares | Dissolved |
| HONG KONG UNION VISION CO., LIMITED | Private company limited by shares | Live |
| JADE UNION LIMITED | Private company limited by shares | Dissolved |
| UNION PLASTICS & CHEMICAL (HK) LIMITED | Private company limited by shares | Dissolved |
| UNION KEY HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION HONEST INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| JET UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| EXCELLENT UNION ENTERPRISE LIMITED | Private company limited by shares | Live |
| UNION TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| MERIT UNION LIMITED | Private company limited by shares | Dissolved |
| UNION STAR INTERNATIONAL LIMITED | Private company limited by shares | Live |
| PREMIUM UNION LIMITED | Private company limited by shares | Dissolved |
| UNION FIELD DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| SANHAO UNION INDUSTRY LIMITED | Private company limited by shares | Live |
| FRANCE MARLBAORU UNION ASSET LIMITED | Private company limited by shares | Dissolved |
| HAONYI UNION ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNION INDUSTRIES (HONG KONG) LIMITED | Private company limited by shares | Live |
| FINE UNION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| ISLAND UNION LIMITED | Private company limited by shares | Live |
| UNION-LINK INTERNATIONAL TOBACCO (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION DRAGON TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION LINKAGE LIMITED | Private company limited by shares | Live |
| TALENT UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION VANTAGE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION GENESIS LIMITED | Private company limited by shares | Dissolved |
| CROWN UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| EXCELLENCE UNION GARMENT COMPANY LIMITED | Private company limited by shares | Live |
| UNION WISE LIMITED | Private company limited by shares | Dissolved |
| UNION POWER LIMITED | Private company limited by shares | Live |
| NEW UNION INTERNATIONAL (H.K.) LIMITED | Private company limited by shares | Live |
| NEW UNION CHINA COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION ELITE INTERNATIONAL ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION (INTERNATIONAL) ENGINEERING TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| HONG KONG SINO-KOREA UNION DIGITAL LIMITED | Private company limited by shares | Dissolved |
| UNION PROPERTY INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION WINNER LIMITED | Private company limited by shares | Live |
| SUPER UNION GROUP COMPANY LIMITED | Private company limited by shares | Live |
| UNION PARK DEVELOPMENT LIMITED | Private company limited by shares | Live |
| USA GM.VW UNION PETROLEUM CO., LIMITED | Private company limited by shares | Dissolved |
| UNION CREDIT ADVISORY LIMITED | Private company limited by shares | Dissolved |
| UNION CREATION CHEMICAL LIMITED | Private company limited by shares | Dissolved |
| HONG KONG UNION APPLE CLOTHING LIMITED | Private company limited by shares | Dissolved |
| UNION LOGISTICS (CHINA) LIMITED | Private company limited by shares | Live Commenced dormancy on 04-May-2011 |
| UNION LINK TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| TRADE UNION LIMITED | Private company limited by shares | Live |
| GREAT UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SHINNING UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION CENTRAL LIMITED | Private company limited by shares | Dissolved |
| OCEAN UNION SHIPPING CO., LIMITED | Private company limited by shares | Live |
| WISE UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| WIDE UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SEA UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| SHEEN UNION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| STATUE OF WORLD PEACE ROSELLINI UNION LIMITED | Private company limited by shares | Dissolved |
| SUCCESS UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| WORLD UNION INTERNATIONAL INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| ASIA UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| JOY UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION STAR ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNION ARTS ENGINEERING LIMITED | Private company limited by shares | Live |
| UNION MASTER DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| Union Well Holdings Limited | Private company limited by shares | Live |
| UNION VICTORY INTERNATIONAL (H.K.) LIMITED | Private company limited by shares | Dissolved |
| ORIENTAL UNION CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Live |
| BALDWIN UNION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| GLOBAL TOURISM UNION LIMITED | Private company limited by shares | Dissolved |
| UNION RESOURCES (ASIA) LIMITED | Private company limited by shares | Dissolved |
| SINO UNION INSURANCE SERVICES LIMITED | Private company limited by shares | Dissolved |
| UNION LIHUA (HONG KONG) PHARMACETICAL LIMITED | Private company limited by shares | Dissolved |
| GOLD UNION (CHINA) LIMITED | Private company limited by shares | Dissolved |
| UNION FORTUNE LIMITED | Private company limited by shares | Dissolved |
| UNION FASHION CO., LIMITED | Private company limited by shares | Live |
| UNION STEEL INTERNATIONAL LIMITED | Private company limited by shares | Live |
| EAGLE UNION TRANSPORTATION CO., LIMITED | Private company limited by shares | Dissolved |
| W.T.G UNION (H.K.) COMPANY LIMITED | Private company limited by shares | Dissolved |
| SINO CREATIVE UNION (H.K.) LIMITED | Private company limited by shares | Dissolved |
| SUN UNION AUDIO LIMITED | Private company limited by shares | Live Commenced dormancy on 30-Nov-2012 |
| UNION JOIN LIMITED | Private company limited by shares | Dissolved |
| UNION STAR HOLDINGS (HK) LIMITED | Private company limited by shares | Live |
| UNION INTERNATIONAL INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Mega Union Trading Limited | Private company limited by shares | Dissolved |
| UNION HARVEST DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| LONG UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ALL UNION LIMITED | Private company limited by shares | Dissolved |
| TRUE UNION LIMITED | Private company limited by shares | Dissolved |
| TOP UNION INTERNATIONAL INVESTMENT ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| BEST UNION INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| ITALY UNION KANGAROO INT'L DEVELOPMENT LIMITED | Private company limited by shares | Live |
| GRAND UNION (ASIA) LIMITED | Private company limited by shares | Dissolved |
| UNION FIELD INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |