| FOREVER-VANTAGE UNION INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Live |
| RICH UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNION STAND INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION STAND DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNIONS SHIPPING HOLDING LIMITED | Private company limited by shares | Live |
| UNION MERCHANT LIMITED | Private company limited by shares | Dissolved |
| YIELD UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| POWERFUL UNION LIMITED | Private company limited by shares | Dissolved |
| UNION MUSIC INTERNATIONAL ENTERPRISE LIMITED | Private company limited by shares | Live |
| ABLE UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION KINTON LIMITED | Private company limited by shares | Live |
| UNION MISOKO KITCHEN APPLIANCES CO., LIMITED | Private company limited by shares | Live |
| UNION BUS CONSULTANT LIMITED | Private company limited by shares | Live |
| UK UNION WEALTH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION ASIA LIMITED | Private company limited by shares | Live |
| TBS UNION LIMITED | Private company limited by shares | Dissolved |
| ASIA UNION OIL CO. LIMITED | Private company limited by shares | Live |
| FAR OCEAN BEST UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| OCEAN UNION LOGISTICS SERVICES CO LIMITED | Private company limited by shares | Live |
| UNION GROUP CORPORATION LIMITED | Private company limited by shares | Live |
| UNION EXCELLENT LIMITED | Private company limited by shares | Live |
| SUN UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION PROSPEROUS LIMITED | Private company limited by shares | Live |
| CYBER UNION LIMITED | Private company limited by shares | Dissolved |
| BRIGHTEN UNION LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION WAY ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNION WORLD INTERNATIONAL GROUP HOLDINGS LIMITED | Private company limited by shares | Live |
| HONG KONG GOLDEN UNION LIMITED | Private company limited by shares | Live |
| UNION POWERMAGNETS CO., LIMITED | Private company limited by shares | Live |
| GOLD UNION INTERNATIONAL INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| ACE UNION INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| WORLD UNION INDUSTRIES LIMITED | Private company limited by shares | Live |
| TECH UNION LIMITED | Private company limited by shares | Live |
| INTERNATIONAL BUSINESS UNION CO., LIMITED | Private company limited by shares | Live |
| CHINESE CHRISTIAN ASSEMBLIES OF GOD UNION LIMITED | Company limited by guarantee | Live |
| UNION VISION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION FANCY LIMITED | Private company limited by shares | Live |
| NEW UNION INTERNATIONAL INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNION INTERNATIONAL PROPERTIES LIMITED | Private company limited by shares | Live |
| UNION EAST ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION EAST INVESTMENT LIMITED | Private company limited by shares | Live |
| Union Fishing Thai-Sing Limited | Private company limited by shares | Live Commenced dormancy on 14-Sep-2015 |
| UNION FORCE LIMITED | Private company limited by shares | Live |
| UNION OF GREEN PURCHASING CO., LIMITED -THE- | Private company limited by shares | Dissolved |
| UNION PROFIT CORPORATION LIMITED | Private company limited by shares | Live |
| UNION RICHWAY LIMITED | Private company limited by shares | Live |
| UNION MAXWELL LIMITED | Private company limited by shares | Live |
| UNION SUPER STAR LIMITED | Private company limited by shares | Live |
| CHART UNION LIMITED | Private company limited by shares | Live |
| HONGKONG SEANA UNION CO., LIMITED | Private company limited by shares | Dissolved |
| GRAND GOLDEN UNION LIMITED | Private company limited by shares | Dissolved |
| UNION GLORY (HK) INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION TARGET (CHINA) LIMITED | Private company limited by shares | Live |
| Union Trade (Shanghai) Limited | Private company limited by shares | Dissolved |
| CON & WIN UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| CENTRAL UNION DECO CO. LIMITED | Private company limited by shares | Dissolved |
| Mingfai Union Limited | Private company limited by shares | Live |
| UPPER UNION LIMITED | Private company limited by shares | Dissolved |
| AMERICAN WEST UNION INT'L HK LIMITED | Private company limited by shares | Dissolved |
| WELL UNION (CHINA) LIMITED | Private company limited by shares | Live |
| UNION ROCK (HK) LIMITED | Private company limited by shares | Live |
| HONGKONG UNION INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| MEGA UNION FAR EAST LIMITED | Private company limited by shares | Dissolved |
| MIGHTY UNION ONLINE LLC CO., LIMITED | Private company limited by shares | Dissolved |
| EURO ASIA UNION INTERNATIONAL TRADING COMPANY LIMITED | Private company limited by shares | Live |
| UNION POINT.JO LIMITED | Private company limited by shares | Dissolved |
| MASS UNION TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION ASIAN DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION RISE INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION FOCUS ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION KINGDOM INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION SIGHT LIMITED | Private company limited by shares | Live |
| CRYSTAL UNION LIMITED | Private company limited by shares | Dissolved |
| UNION RICHEST (HONG KONG) LIMITED | Private company limited by shares | Live |
| ASIA UNION TOBACCO LIMITED | Private company limited by shares | Live |
| GREAT UNION (H.K.) LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION ENTERPRISE LIMITED | Private company limited by shares | Live |
| GREAT UNION MINING INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| WELL UNION INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION HERO (HK) LIMITED | Private company limited by shares | Live |
| CHINA UNION INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Live |
| POWER UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION PROSPEROUS INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Union Power Mortars Company Limited | Private company limited by shares | Live |
| HONG KONG UNION FORTUNE LIMITED | Private company limited by shares | Live |
| UNION LASHING CO., LIMITED | Private company limited by shares | Live |
| EUROPEAN UNION INTERNATIONAL TRADING INVESTMENT (HOLDINGS) LIMITED | Private company limited by shares | Dissolved |
| RISE UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| ART UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| GLORIOUS UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| MEGA UNION FINANCE LIMITED | Private company limited by shares | Live |
| CHINA FINANCE CAPITAL UNION GROUP LIMITED | Private company limited by shares | Live |
| SUN'S UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION OCEAN GROUP COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION PARTNER INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION LINKER INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Live |
| ETERNAL UNION LIMITED | Private company limited by shares | Live |
| STAR SKY UNION LIMITED | Private company limited by shares | Dissolved |
| HONGKONG UNION GROUP CO., LIMITED | Private company limited by shares | Live |