| STAR UNION ENTERTAINMENT LIMITED | Private company limited by shares | Dissolved |
| STAR UNION CAPITAL RESOURCES LIMITED | Private company limited by shares | Live |
| U&M Technology Union Co., Limited | Private company limited by shares | Live |
| UNION RISE TRADING LIMITED | Private company limited by shares | Live |
| UNION ALLIANCE INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| UNION GRACE SHIPPING (H.K.) CO., LIMITED | Private company limited by shares | Live |
| GREAT UNION RESOURCES HOLDINGS COMPANY LIMITED | Private company limited by shares | Dissolved |
| ASIA PACIFIC MEIYE CEO UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| LUCKY UNION GROUP LIMITED | Private company limited by shares | Dissolved |
| FIRST UNION INC LIMITED | Private company limited by shares | Live |
| Union Power Construction Engineering Limited | Private company limited by shares | Live |
| FOREVER UNION TRADING LIMITED | Private company limited by shares | Live |
| PRESTIGE UNION LIMITED | Private company limited by shares | Live |
| UNION ENTERPRISE (H.K.) CO., LIMITED | Private company limited by shares | Live |
| GOOD UNION MEDICAL LIMITED | Private company limited by shares | Live |
| WORLD UNION HOUSWARE CO., LIMITED | Private company limited by shares | Live |
| KINGS UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| EMIC Culture Union (HK) Limited | Company limited by guarantee | Live |
| China Union of Translators & Interpreters Limited | Private company limited by shares | Live |
| UNION LITE LIMITED | Private company limited by shares | Live |
| SILVER UNION (HK) LIMITED | Private company limited by shares | Live |
| UNION CHARM INC LIMITED | Private company limited by shares | Dissolved |
| GOOD UNION MANAGEMENT LIMITED | Private company limited by shares | Live |
| UNION PLAZA INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Live |
| RICH UNION INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Live |
| STATE UNION LIMITED | Private company limited by shares | Live |
| UNION LUCK (CHINA) LIMITED | Private company limited by shares | Live |
| UNION FAITH ENGINEERING EQUIPMENT LIMITED | Private company limited by shares | Live |
| STATE UNION INTERNATIONAL (HK) LIMITED | Private company limited by shares | Live |
| YADI UNION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Eastern Union Holding Limited | Private company limited by shares | Live |
| CHINA UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| TOP UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| APPS UNION TECHNOLOGIES INTERNATIONAL PVT LIMITED | Private company limited by shares | Live |
| Union Agriscience Holdings Co., Limited | Private company limited by shares | Live |
| UNION INSIGHT LIMITED | Private company limited by shares | Live |
| UNION GENERAL SHARE CO., LIMITED | Private company limited by shares | Live |
| FORTUNE UNION HOLDING CO., LIMITED | Private company limited by shares | Live |
| Union Victory Technologies Development Limited | Private company limited by shares | Live |
| Union Beast Co., Limited | Private company limited by shares | Live |
| UNION OCEAN LOGISTICS (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| UNION GOOD TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| EAST UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION SCORE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION PRIME INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION CHAMPIONS TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| BLUEBELL UNION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| MASTER UNION GLOBAL HOLDINGS LIMITED | Private company limited by shares | Live |
| Global Union Auto Co., Limited | Private company limited by shares | Live |
| WESTERN UNION INDUSTRIAL (HK) CO., LIMITED | Private company limited by shares | Live |
| UNION WAY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Hong Kong Union Evergreen Trading Limited | Private company limited by shares | Dissolved |
| UNION GUIDE ENTERPRISES LIMITED | Private company limited by shares | Live |
| Union Logic Co. Limited | Private company limited by shares | Live |
| EXCEL UNION HOLDINGS CO., LIMITED | Private company limited by shares | Live |
| SHUNDE PENAVICO UNION CO. LIMITED | Private company limited by shares | Live |
| 3 Stars Union Limited | Private company limited by shares | Live |
| UNION INTERNATIONAL FINANCE INVESTMENT LIMITED | Private company limited by shares | Live |
| Fortune Union Financial Holdings (HongKong) Limited | Private company limited by shares | Live |
| Asia Business Association Union Co., Limited | Private company limited by shares | Live |
| UNION MERIT INTERNATIONAL PROPERTIES LIMITED | Private company limited by shares | Live |
| Union Fortune Trading & Developing Limited | Private company limited by shares | Live |
| WORLD TECHNOLOGY PROMOTION UNION LIMITED | Private company limited by shares | Live |
| Union Paper Co., Limited | Private company limited by shares | Live |
| ON UNION TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| SINO UNION CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNION FOURNITURES DE CONFECTION CO., LIMITED | Private company limited by shares | Live |
| Bright Union Lighting Co., Limited | Private company limited by shares | Live |
| TAIZHOU UNION PLASTIC MOULD CO., LIMITED | Private company limited by shares | Live |
| INBEST UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| HONG KONG UNION DEVELOPMENT CO., LIMITED | Private company limited by shares | Live |
| BIG UNION INTERNATIONAL (HK) LIMITED | Private company limited by shares | Live |
| ELITE UNION LIMITED | Private company limited by shares | Live |
| UNION BEST INC LIMITED | Private company limited by shares | Dissolved |
| Union International Accounting Limited | Private company limited by shares | Live |
| SILVER UNION INTERNATIONAL ENTERPRISES LIMITED | Private company limited by shares | Live |
| Global Union of Chinese Commerce Chamber Limited | Private company limited by shares | Live |
| CHINA CULTURE ART UNION LIMITED | Private company limited by shares | Live |
| Creativity Union Creative Hongkong Co., Limited | Private company limited by shares | Live |
| UNION PEACE CO., LIMITED | Private company limited by shares | Dissolved |
| SINO INTERNATIONAL YI JING UNION LIMITED | Private company limited by shares | Live |
| GLORY UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION SINO INTERNATIONAL INDUSTRIAL TRADING LIMITED | Private company limited by shares | Live |
| UNION PIN LIMITED | Private company limited by shares | Live |
| UNION TOP CREATION LIMITED | Private company limited by shares | Live |
| UNION LEAD INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Union Tech Consultation Limited | Private company limited by shares | Dissolved |
| UNION TEAM TECHNOLOGY LIMITED | Private company limited by shares | Live |
| WORLD UNION INC LIMITED | Private company limited by shares | Live |
| UNION PACIFIC LIMITED | Private company limited by shares | Live |
| UNION STAR INC LIMITED | Private company limited by shares | Live |
| UNION ENGINEERING CONSULTING LIMITED | Private company limited by shares | Live |
| GEM UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| FAME UNION TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| CHAIN UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION KINETIC INTERNATIONAL LIMITED | Private company limited by shares | Live |
| VITAL UNION COMPANY LIMITED | Private company limited by shares | Live |
| NATION UNION RESOURCE LIMITED | Private company limited by shares | Live |
| CHEER UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Big Union International (HK) Industry Limited | Private company limited by shares | Live |