| STANFORD UNION LIMITED | Private company limited by shares | Live |
| EARN UNION LIMITED | Private company limited by shares | Live |
| China Mining Union International Co., Limited | Private company limited by shares | Dissolved |
| GOLD MULTI UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| BEST UNION LOGISTICS CO., LIMITED | Private company limited by shares | Live |
| GOLDEN UNION RICH INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SUN UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| JASPER UNION LIMITED | Private company limited by shares | Dissolved |
| UNION PACIFIC CAPITAL INVESTMENT CO., LIMITED | Private company limited by shares | Dissolved |
| UNION VIEW CHEMICAL LIMITED | Private company limited by shares | Dissolved |
| ASIA UNION SHIPPING CO., LIMITED | Private company limited by shares | Dissolved |
| UNION CITY HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION FIRST CORPORATION LIMITED | Private company limited by shares | Live |
| UNION TECH CORPORATION LIMITED | Private company limited by shares | Dissolved |
| UNION AIR CONDITIONING & ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| UNION CONSULTANCY LIMITED | Private company limited by shares | Dissolved |
| AMGEN UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION SOURCE INDUSTRIAL DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION SYSTEM INDUSTRIAL LIMITED | Private company limited by shares | Live |
| HONG KONG UNION TONGCHUANG LIMITED | Private company limited by shares | Dissolved |
| TANFIELD UNION LIMITED | Private company limited by shares | Live |
| GRACEFUL UNION LIMITED | Private company limited by shares | Dissolved |
| FAITH UNION INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Live |
| UNIONTEX ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION MARINE (HK) CO., LIMITED | Private company limited by shares | Live |
| UNION SCREEN PRINTING (HK) COMPANY LIMITED | Private company limited by shares | Live |
| U SPACE INDOOR DESIGNERS INTERNATIONAL UNION LIMITED | Private company limited by shares | Live |
| TAIWAN XINTAI UNION INT'L TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION PROFIT INC. LIMITED | Private company limited by shares | Live |
| RICH UNION LOGISTICS LIMITED | Private company limited by shares | Dissolved |
| CONCORD UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| TSING HUA TRADE AND INDUSTRY UNION LIMITED | Private company limited by shares | Live |
| WORLD HOTEL UNION GENERAL LIMITED | Private company limited by shares | Live |
| FAMOUS UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| CHINA INTERNATIONAL WINE ENTERPRISE UNION LIMITED | Private company limited by shares | Live |
| Dikson Union Limited | Private company limited by shares | Dissolved |
| HONGKONG NEW UNION TRADING CO., LIMITED | Private company limited by shares | Dissolved |
| National Union Petroleum Group Co., Limited | Private company limited by shares | Live |
| China Union Insure Corporation Limited | Private company limited by shares | Dissolved |
| CHINA RICH UNION LIMITED | Private company limited by shares | Live |
| UNION BRIGHT INC. LIMITED | Private company limited by shares | Live |
| UNION WORLD INTERNATIONAL ENTERPRISE LIMITED | Private company limited by shares | Live |
| UNION SMART PROPERTIES LIMITED | Private company limited by shares | Live |
| SHARE UNION LIMITED | Private company limited by shares | Dissolved |
| UNION SECURITY TECHNOLOGY (ASIA) CO., LIMITED | Private company limited by shares | Live |
| DRAGON UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| CHINA HYDROCARBON AND NUCLEAR FERTILIZER INT'L INDUSTRY UNION LIMITED | Private company limited by shares | Live |
| GREAT UNION LOGISTICS COMPANY LIMITED | Private company limited by shares | Live |
| UNION CENTURY (ASIA) LIMITED | Private company limited by shares | Dissolved |
| INTERNATIONAL PILATES FITNESS UNION LIMITED | Private company limited by shares | Dissolved |
| CHINA AGRICULTURE INT'L UNION GROUP LIMITED | Private company limited by shares | Dissolved |
| PKU PE INVESTMENT UNION CO., LIMITED | Private company limited by shares | Dissolved |
| UNION TRADE (HK) LIMITED | Private company limited by shares | Live |
| UNION WORLD INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION SUCCESS WEALTH CREATION LIMITED | Private company limited by shares | Dissolved |
| SINO UNION CAPITAL RESOURCES LIMITED | Private company limited by shares | Live |
| UNION WEALTHY TRADING LIMITED | Private company limited by shares | Live |
| WEST UNION LOGISTICS (CHINA) CO., LIMITED | Private company limited by shares | Live |
| UNION ASIA GROUP DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| ASIAN UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION SOURCES LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION (H.K.) LIMITED | Private company limited by shares | Dissolved |
| GLOBAL RESOURCE INTERNATIONAL UNION GROUP LIMITED | Private company limited by shares | Live |
| GUI LUN JIA TONG UNION RUBBER CO., LIMITED | Private company limited by shares | Live |
| STAR UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION HOSPITAL CHARITY PROGRAM LIMITED | Company limited by guarantee | Live |
| CHINA UNION INTERNATIONAL IMP&EXP LIMITED | Private company limited by shares | Live |
| UNION ACCESS LIMITED | Private company limited by shares | Live |
| UN ARTIST & COLLECTOR UNION LIMITED | Private company limited by shares | Dissolved |
| OCEAN UNION CREATION LIMITED | Private company limited by shares | Live |
| MEGA UNION HONG KONG GROUP LIMITED | Private company limited by shares | Dissolved |
| HONG KONG UNION PROPERTY HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION REGENT INVESTMENTS LIMITED | Private company limited by shares | Live |
| Advanced Union Limited | Private company limited by shares | Dissolved |
| KING UNION (RESOURCES) LIMITED | Private company limited by shares | Live |
| HE TONG UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SUPER UNION INTERNATIONAL TRADE CO., LIMITED | Private company limited by shares | Live |
| ASIA UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| SUN UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNIONLEVER INTERNATIONAL INDUSTRY GROUP LIMITED | Private company limited by shares | Dissolved |
| Union Petroleum Technology Development Co., Limited | Private company limited by shares | Dissolved |
| UNIVERSAL UNION CONSULTING CO., LIMITED | Private company limited by shares | Live |
| CENTRE UNION LIMITED | Private company limited by shares | Live |
| UNION ETERNAL DYEING FACTORY LIMITED | Private company limited by shares | Dissolved |
| SHINING UNION LIMITED | Private company limited by shares | Live |
| Union Mind Technology Co., Limited | Private company limited by shares | Dissolved |
| Liberal Union Limited | Private company limited by shares | Live |
| UNION BEST INTERNATIONAL CORPORATION LIMITED | Private company limited by shares | Live |
| SEVUITTON (YUANDONG) BRAND UNION ASSOCIATION LIMITED | Private company limited by shares | Live |
| GOLD UNION TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| UNION PCB DEVELOPMENT CO., LIMITED | Private company limited by shares | Live |
| UNION-ARAB COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION SPORT CLUB YOUTH DEVELOPMENT LIMITED | Company limited by guarantee | Live |
| SK UNION LIMITED | Private company limited by shares | Dissolved |
| ASIA UNION OIL SYSTEM HONG KONG LIMITED | Private company limited by shares | Live |
| UNION INDUSTRIAL DESIGN LIMITED | Private company limited by shares | Dissolved |
| Union Automatization Group Limited | Private company limited by shares | Dissolved |
| International Yoga Exchange Union Limited | Private company limited by shares | Live |
| GOLDEN UNION PRO LIMITED | Private company limited by shares | Live |
| UNION SUCCESS INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Live |