| FIRST UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| HONG KONG UNISTONE INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| Uni-Spring International Limited | Private company limited by shares | Live |
| GREAT UNION (H.K.) LIMITED | Private company limited by shares | Live |
| GROUP UNION (H.K.) LIMITED | Private company limited by shares | Live |
| GOOD UNION 88 LIMITED | Private company limited by shares | Live |
| P&S UNION GROUP CO., LIMITED | Private company limited by shares | Live |
| Energy Union holdings Limited | Private company limited by shares | Live |
| Universal Service Corp Limited | Private company limited by shares | Live |
| Universal Key Limited | Private company limited by shares | Live |
| UNION STRENGTH INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION WISDOM ASIA LIMITED | Private company limited by shares | Live |
| WORTH UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNDERGRAVITY PRODUCTION LIMITED | Private company limited by shares | Live |
| UNION PRIME TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| CHAMPION UNION TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| BEST UNION CONSULTANTS LIMITED | Private company limited by shares | Live |
| UNIVERSAL UNION CONSULTANTS LIMITED | Private company limited by shares | Live |
| Union of Technology Transfer Professionals Limited | Private company limited by shares | Live |
| PAN UNION INC LIMITED | Private company limited by shares | Live |
| UNION MANAGEMENT HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION GROUP MANAGEMENT LIMITED | Private company limited by shares | Live |
| Smart Tech Union Limited | Private company limited by shares | Live |
| Unique Realty Limited | Private company limited by shares | Live |
| UNION CREATE TRADING LIMITED | Private company limited by shares | Live |
| MINAYA UNITRADE LIMITED | Private company limited by shares | Dissolved |
| Union Success Development (International) Limited | Private company limited by shares | Live |
| UNISERVE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNION BON LIMITED | Private company limited by shares | Live |
| UNION PACK LIMITED | Private company limited by shares | Live |
| UNION OCEAN MEDICAL COMPANY LIMITED | Private company limited by shares | Live |
| UNION SUCCESS PACIFIC LIMITED | Private company limited by shares | Live |
| WEALTH UNION INC LIMITED | Private company limited by shares | Live |
| NEXT FUTURE UNIVERSE LIMITED | Private company limited by shares | Live |
| E-SPORTS UNIVERSE LIMITED | Private company limited by shares | Live |
| UNIWAY HONG KONG LIMITED | Private company limited by shares | Live |
| EXCEL UNIVERSE LIMITED | Private company limited by shares | Live |
| HK UNION RONGCHUANG DEVELOPMENT LIMITED | Private company limited by shares | Live |
| Yummy Union Investment Limited | Private company limited by shares | Live |
| UNION STAR (HK) GROUPS LIMITED | Private company limited by shares | Live |
| UNION SINO INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Live |
| KNIFE-THROWING UNION OF CHINA LIMITED | Private company limited by shares | Live Commenced dormancy on 28-Sep-2018 |
| UNIDONGBO TRADING LIMITED | Private company limited by shares | Live |
| UNION PLANET LIMITED | Private company limited by shares | Live |
| UNION BRIGHT GLOBAL TRADING COMPANY LIMITED | Private company limited by shares | Live |
| MODA UNION FASHION HK CO., LIMITED | Private company limited by shares | Live |
| UNIBREX CO., LIMITED | Private company limited by shares | Live |
| RICH UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNIDECISION LIMITED | Private company limited by shares | Live |
| UNION JOY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNICALL TECHNOLOGY (H.K.) LIMITED | Private company limited by shares | Live |
| ORIENTAL UNIVERSAL ASIA LIMITED | Private company limited by shares | Live |
| ORIENTAL UNION VANTAGE LIMITED | Private company limited by shares | Live |
| UNION CROWN LIMITED | Private company limited by shares | Live |
| UNION GOLD POINT LIMITED | Private company limited by shares | Live |
| UNION GROUP INC LIMITED | Private company limited by shares | Live |
| UNION LANDRICH LIMITED | Private company limited by shares | Live |
| UNION MEGAN LIMITED | Private company limited by shares | Live |
| UNION KINGSWELL LIMITED | Private company limited by shares | Live |
| UNION KINGVIEW LIMITED | Private company limited by shares | Live |
| UNION WELLNESS LIMITED | Private company limited by shares | Live |
| UNION MAXLY LIMITED | Private company limited by shares | Live |
| CHINA RV INDUSTRY UNION LIMITED | Private company limited by shares | Live |
| FAR EAST UNION RICH LIMITED | Private company limited by shares | Live |
| BEST UNION INTERNATIONAL ENTERPRISES LIMITED | Private company limited by shares | Live |
| United Solution Co., Limited | Private company limited by shares | Live |
| HIGHLY UNITED ASIA LIMITED | Private company limited by shares | Live |
| UNION BEST ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION FAITH ENTERPRISES DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION YICK TAK LIMITED | Private company limited by shares | Live |
| UNIVERSAL UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| Union Luck Investment Co., Limited | Private company limited by shares | Live |
| STAR UNION MEGA TRADE LIMITED | Private company limited by shares | Live |
| UNION SURPLUS 88 LIMITED | Private company limited by shares | Live |
| UNIVERSAL ASIA 88 LIMITED | Private company limited by shares | Live |
| HILL UNION INC LIMITED | Private company limited by shares | Live |
| UNION POWERS DEVELOPMENT LIMITED | Private company limited by shares | Live |
| OCEAN UNITED LIMITED | Private company limited by shares | Live |
| UNITED HAPPINESS LIMITED | Private company limited by shares | Live |
| Prince Universe Company Limited | Private company limited by shares | Live |
| Universal Global Electronics Co., Limited | Private company limited by shares | Live |
| UNION PRIME MEGA TRADE LIMITED | Private company limited by shares | Live |
| UNION EXPERT INC LIMITED | Private company limited by shares | Live |
| UNION INDUSTRY HOLDING LIMITED | Private company limited by shares | Live |
| UNION FASHION GROUP LIMITED | Private company limited by shares | Live |
| MOUNT UNION LIMITED | Private company limited by shares | Live |
| HOPE UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED PROTECTION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| NEW BRIGHTEN UNIVERSE COMPANY LIMITED | Private company limited by shares | Live |
| UNION BRANDS MANAGEMENT LIMITED | Private company limited by shares | Live |
| Ta Yang SR Universal Trading Company Limited | Private company limited by shares | Live |
| HARBOUR UNION TRADING LIMITED | Private company limited by shares | Live |
| HARVEST UNION (HONG KONG) LIMITED | Private company limited by shares | Live |
| GREAT UNION TRADING LIMITED | Private company limited by shares | Live |
| UNION TECH (HK) GROUP LIMITED | Private company limited by shares | Live |
| UNION LUCK TRADING LIMITED | Private company limited by shares | Live |
| United Capital Investments HK Company Limited | Private company limited by shares | Live |
| SINO UNION ECONOMIC TRADING LIMITED | Private company limited by shares | Live |
| UNIWELL ELECTRONICS LIMITED | Private company limited by shares | Live |
| UNION ON ELECTRONICS LIMITED | Private company limited by shares | Live |