| UNION ELECTRONIC INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Live |
| HONGKONG UNION E-TRADING LIMITED | Private company limited by shares | Live |
| Union Honest Agency Limited | Private company limited by shares | Live |
| UNION LUCK PROPERTIES LIMITED | Private company limited by shares | Live |
| KINGS UNION LIMITED | Private company limited by shares | Live |
| THINKER UNION INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| CHINESE YIJING UNION CO., LIMITED | Private company limited by shares | Live |
| UNION SUNSHINE ELECTRONICS (HK) LIMITED | Private company limited by shares | Live |
| UCI UNION DESIGNING (CHINA) CO., LIMITED | Private company limited by shares | Live |
| FIELD UNION CO., LIMITED | Private company limited by shares | Live |
| CHINA FACTORY UNION CO., LIMITED | Private company limited by shares | Live |
| ZHONG FEI UNION INVESTMENT GROUP LIMITED | Private company limited by shares | Live |
| AG UNION (HK) INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| EVERWIN UNION CO., LIMITED | Private company limited by shares | Dissolved |
| UNION MATE INVESTMENT LIMITED | Private company limited by shares | Live |
| Fine Union Group Inc Limited | Private company limited by shares | Live |
| UNION VICTOR HOLDINGS LIMITED | Private company limited by shares | Live |
| MEGA UNION INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| UNION RAY LIMITED | Private company limited by shares | Live |
| WONDER UNION LIMITED | Private company limited by shares | Live |
| Power Union Industrial Co., Limited | Private company limited by shares | Dissolved |
| GOOD UNION HONG KONG DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| BEINPOINT UNION LIMITED | Private company limited by shares | Dissolved |
| EXCELLENT UNION FASHION ACCESSORIES CO., LIMITED | Private company limited by shares | Live |
| UNION MARINE GROUP LIMITED | Private company limited by shares | Dissolved |
| PRAISE UNION LIMITED | Private company limited by shares | Live |
| SHIN UNION SHIPPING CO., LIMITED | Private company limited by shares | Dissolved |
| UNION GAINER (HONG KONG) LIMITED | Private company limited by shares | Live |
| PACIFIC UNION TRADING LIMITED | Private company limited by shares | Live |
| GREAT UNION ELECTRONIC TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| EVENING NEWS UNION CO., LIMITED | Private company limited by shares | Live |
| Union Jack Moto Co. Limited | Private company limited by shares | Live |
| SOLARLED UNION GLOBAL GREEN CO., LIMITED | Private company limited by shares | Dissolved |
| China Union Asset Investment Group Limited | Private company limited by shares | Live |
| WELL HARVEST UNION LIMITED | Private company limited by shares | Live |
| UNION RICH ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| CYBER UNION CORPORATION LIMITED | Private company limited by shares | Live |
| STRONG UNION CORPORATION LIMITED | Private company limited by shares | Live |
| POWER UNION CORPORATION LIMITED | Private company limited by shares | Live |
| UNION BRIGHT INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Dissolved |
| BEST UNION RESOURCES LIMITED | Private company limited by shares | Dissolved |
| BEAUTY UNION INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Live |
| UNION CENTURY ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION VENTURE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| JC UNION MARINE CO., LIMITED | Private company limited by shares | Live |
| TARGET UNION CONSULTANTS CO., LIMITED | Private company limited by shares | Live |
| UNION GAIN CORPORATION LIMITED | Private company limited by shares | Live |
| Union Deluxe International Investment Limited | Private company limited by shares | Live |
| UNION HARVEST ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| GREEN UNION GROUP LIMITED | Private company limited by shares | Live |
| UNION CHIP TECHNOLOGY LIMITED | Private company limited by shares | Live |
| WEST UNION LEATHER CO., LIMITED | Private company limited by shares | Live |
| European Union Fund Management Group Limited | Private company limited by shares | Live |
| UNION RIGHT LIMITED | Private company limited by shares | Live |
| MILLIONS UNION INTERNATIONAL CAPITAL LIMITED | Private company limited by shares | Live |
| BRIGHT UNION INVESTMENT DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION ASSETS LIMITED | Private company limited by shares | Live |
| UNION ACHIEVE LIMITED | Private company limited by shares | Live |
| UNION BROTHER INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION SMART CAPITAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| KING UNION GROUP LIMITED | Private company limited by shares | Live |
| NEW UNION IMPORT & EXPORT LIMITED | Private company limited by shares | Live |
| GREAT UNION CAPITAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNIONS HONG KONG ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| EUROPEAN UNION INTERNATIONAL INDUSTRIAL CO., LIMITED | Private company limited by shares | Live Commenced dormancy on 22-Jun-2015 |
| UNION LOGISTICS (HK) LIMITED | Private company limited by shares | Live |
| Fame Union Production Limited | Private company limited by shares | Live |
| HONG KONG EMPEROR UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| MAX UNION WORLDWIDE LIMITED | Private company limited by shares | Live |
| UNION LUCK GROUP HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION STAR GROUP HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| LUXURY (CHINA) UNION CO., LIMITED | Private company limited by shares | Dissolved |
| UNION ART LIMITED | Private company limited by shares | Live |
| INTERNATIONAL PRIVATE HOLDING INVESTMENT UNION (CHINA) LIMITED | Private company limited by shares | Live |
| MASTER UNION TECHNOLOGY (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION GRAND CORPORATION LIMITED | Private company limited by shares | Live |
| Chinese Enterprise Union Limited | Private company limited by shares | Dissolved |
| UNION PACK INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNION RED LIMITED | Private company limited by shares | Live |
| CHINA INVESTORS UNION GROUP CO., LIMITED | Private company limited by shares | Live |
| SAFE UNION LIMITED | Private company limited by shares | Live |
| UNION FIRST LIMITED | Private company limited by shares | Live |
| UNION WEALTH HONG KONG HOLDINGS LIMITED | Private company limited by shares | Live |
| WELL UNION INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Dissolved |
| TIANHE UNION (HK) HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION HONG KONG DEVELOPMENT LIMITED | Private company limited by shares | Live |
| EXHIBITION UNION GROUP COMPANY LIMITED | Private company limited by shares | Dissolved |
| KEY UNION LIMITED | Private company limited by shares | Live |
| Union Mountains Company Limited | Private company limited by shares | Live |
| NEW UNION INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION TECNOLOGIA CONSULTING LIMITED | Private company limited by shares | Live |
| COMMERCIAL UNION INT'L INDUSTRIAL LIMITED | Private company limited by shares | Live |
| RICH UNION CORPORATION LIMITED | Private company limited by shares | Live |
| TREASURE UNION (HK) LIMITED | Private company limited by shares | Live |
| UNION ABLE CORPORATION LIMITED | Private company limited by shares | Live |
| UnionChina International Management Institute Limited | Private company limited by shares | Live |
| GUANGZHOU UNION TEXTILE LIMITED | Private company limited by shares | Live |
| Strong Union (HK) Industrial Limited | Private company limited by shares | Live |
| SINO UNION HONG KONG DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION POWER INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Live |