| Unison Industrial Development Limited | Private company limited by shares | Live |
| SI KA UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| JOINT UNION ENGINEERING LIMITED | Private company limited by shares | Live |
| TRUMP UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNCLE B KITCHEN COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION PROFIT INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| ROYAL UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| CHINA LOVE UNION INT'L GROUP LIMITED | Private company limited by shares | Live |
| TOP UNION INTERNATIONAL ENTERPRISE LIMITED | Private company limited by shares | Live |
| CYBER UNIVERSAL COMPANY LIMITED | Private company limited by shares | Live |
| H.K WANHE INT'L BUSINESS UNION LIMITED | Private company limited by shares | Live |
| SKY UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL FOR MODERN LIGHTING AND ELECTRONICS LIMITED | Private company limited by shares | Live |
| ADG UNION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNION PEACE INTERNATIONAL GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION JOY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION SUM INTERNATIONAL ELECTRIC CO., LIMITED | Private company limited by shares | Dissolved |
| ELITE UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UMUDIOKA UNITED CO., LIMITED | Private company limited by shares | Dissolved |
| WISDOM UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNITED AMPLE LIMITED | Private company limited by shares | Dissolved |
| UNITED PLANNER LIMITED | Private company limited by shares | Dissolved |
| UNION TARGET LIMITED | Private company limited by shares | Live |
| UNITED CENTURY LIMITED | Private company limited by shares | Live |
| PRETTY UNION TRADING LIMITED | Private company limited by shares | Live |
| UNION GLOBE LIMITED | Private company limited by shares | Dissolved |
| UNISOURCE HOLDINGS LIMITED | Private company limited by shares | Live |
| GREAT UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| EASTERN UNITED TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNION SPEED TRADING LIMITED | Private company limited by shares | Dissolved |
| MIA & EIS Union CO., Limited | Private company limited by shares | Live |
| UNIWAY INTERNATIONAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Union ComSec Applications Limited | Private company limited by shares | Dissolved |
| UNION ENERGY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| NICE UNIVERSE INDUSTRY LIMITED | Private company limited by shares | Dissolved |
| UNIONFIELD TECH HK LIMITED | Private company limited by shares | Dissolved |
| UNITED WAY CREATION LIMITED | Private company limited by shares | Dissolved |
| EVER UNION TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| BEST TIME UNION CO., LIMITED | Private company limited by shares | Dissolved |
| UNISOURCE WORLDWIDE LIMITED | Private company limited by shares | Live |
| CHARM UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| BEST UNION INTERNATIONAL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNITRANS LOGISTICS LIMITED | Private company limited by shares | Live |
| SUNSHINE UNION SCIENCE GROUP LIMITED | Private company limited by shares | Live |
| SPLENDID UNION INTERNATIONAL CO., LIMITED | Private company limited by shares | Dissolved |
| UNION GAIN INTERNATIONAL INVESTMENT (HK) LIMITED | Private company limited by shares | Live |
| UNISOM ENTERPRISES CO., LIMITED | Private company limited by shares | Live |
| GUANGDONG UNION TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| FRIEND UNION INTERNATIONAL INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNISOURCE (ASIA) LIMITED | Private company limited by shares | Live |
| HARBOUR UNION ENGINEERING LIMITED | Private company limited by shares | Live |
| UNITED (2009) LIMITED | Private company limited by shares | Dissolved |
| CHINA HUANLU EDUCATE UNION GROUP LIMITED | Private company limited by shares | Dissolved |
| MEGA UNION (2009) LIMITED | Private company limited by shares | Live |
| WORLD CHINESE UNION HK LIMITED | Private company limited by shares | Dissolved |
| WIN UNION (2009) LIMITED | Private company limited by shares | Dissolved |
| UNION PROFIT ENTERPRISE (CHINA) LIMITED | Private company limited by shares | Dissolved |
| UNION ELITE ENTERPRISE (HONG KONG) LIMITED | Private company limited by shares | Live |
| SUN UNION (INT'L) FAMOUS DOCTOR CLUB LIMITED | Private company limited by shares | Live |
| UniGlobal Trading Limited | Private company limited by shares | Dissolved |
| HANG YIP UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNITED LUCK ASIA PACIFIC LIMITED | Private company limited by shares | Dissolved |
| UNITED WELL ASIA PACIFIC LIMITED | Private company limited by shares | Live |
| UNIALLTRANS INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Live |
| D & H UNION LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL PRECISION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| East Universal Technology Limited | Private company limited by shares | Live |
| UNITED SMART CAPITAL INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED APPLIANCES GROUP LIMITED | Private company limited by shares | Live |
| UNITED WAY CAPITAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| OCEAN UNION INTERNATIONAL CAPITAL LIMITED | Private company limited by shares | Live |
| CHARM UNION CORPORATION LIMITED | Private company limited by shares | Live |
| BROTHER UNION GROUP LIMITED | Private company limited by shares | Dissolved |
| BUSINESS UNION INTERNATIONAL GROUP LIMITED | Private company limited by shares | Dissolved |
| CHINESE UNION LIMITED | Private company limited by shares | Live |
| GLOBE UNION LIMITED | Private company limited by shares | Dissolved |
| KEEP UNION LIMITED | Private company limited by shares | Dissolved |
| KEEP UNITED LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL PORT INVESTMENT LIMITED | Private company limited by shares | Live |
| PROUD UNION LIMITED | Private company limited by shares | Live |
| TRADER UNION LIMITED | Private company limited by shares | Live |
| UNION FLAG LIMITED | Private company limited by shares | Live |
| UNION WAY ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNIPRO GROUP COMPANY LIMITED | Private company limited by shares | Live |
| EXPRESS UNION SHIPPING LIMITED | Private company limited by shares | Dissolved |
| FORTUNE UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| WELL UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| CHINA TRES UNION INVESTMENT GROUP LIMITED | Private company limited by shares | Live |
| OCEAN UNION INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| HOPE UNITED LIMITED | Private company limited by shares | Live |
| CHINA UNION INT'L MEDIA GROUP LIMITED | Private company limited by shares | Dissolved |
| MAAS UNION LIMITED | Private company limited by shares | Live |
| HK Sinoho Union Trade & Industry Co., Limited | Private company limited by shares | Dissolved |
| UNION SUCCESS INVESTMENTS LIMITED | Private company limited by shares | Live |
| CHINA UNION ENGINEERING LIMITED | Private company limited by shares | Live |
| EVERGOOD UNION LIMITED | Private company limited by shares | Live |
| UNIVERSAL E & M ENGINEERING LIMITED | Private company limited by shares | Live |
| CONSUMER BOSSIBLE UNION NETWORK TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| World Union International Consultants Limited | Private company limited by shares | Live |
| NEW CHINA UNION INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |