| HONG KONG UNION INDUSTRIES LIMITED | Private company limited by shares | Live |
| UNION STAR HONG KONG DEVELOPMENT LIMITED | Private company limited by shares | Live |
| Chips Union Technology Co., Limited | Private company limited by shares | Live |
| Hong Kong Asia Union International Company Limited | Private company limited by shares | Live |
| International Hong-Style Taichi Union Limited | Private company limited by shares | Live |
| IDEAL UNION LIMITED | Private company limited by shares | Live |
| DONGGUAN UNION COSMETICS LIMITED | Private company limited by shares | Live |
| Union Coronet Hong Kong Limited | Private company limited by shares | Live |
| Union Apex Engineering Limited | Private company limited by shares | Live |
| UNION TRADE DEVELOPMENT (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| UNION EAST INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| HONGKONG GLOBAL UNION CO., LIMITED | Private company limited by shares | Live |
| SUPER UNION TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| OUTSTANDING UNION ASSET MANAGEMENT LIMITED | Private company limited by shares | Live |
| Union Supply Chain Management Co., Limited | Private company limited by shares | Live |
| UNION STAR HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION LINK (HK) LIMITED | Private company limited by shares | Live |
| UNITED UNION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNION OCEAN TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNION MASTER INVESTMENT LIMITED | Private company limited by shares | Live |
| STAR UNION INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| SINO UNION GROUP LIMITED | Private company limited by shares | Live |
| GLOBE UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNIONS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| WELL UNION PROPERTIES LIMITED | Private company limited by shares | Live |
| GLORY UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| Union Professional Services Limited | Private company limited by shares | Live |
| Union Intelligent International Co., Limited | Private company limited by shares | Live |
| China Health Union Technology Limited | Private company limited by shares | Live |
| UNION SUNSHINE LIMITED | Private company limited by shares | Live |
| TOPWELL UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| HONGKONG PAN UNION MARINE ENGINEERING CO., LIMITED | Private company limited by shares | Live |
| UNION MASTER TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| Mcdon Union Development Limited | Private company limited by shares | Live |
| STU Union Trading Co., Limited | Private company limited by shares | Live |
| Union Hi-Tech Development Limited | Private company limited by shares | Live |
| GLOBAL UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| Union Metals Trading Limited | Private company limited by shares | Live |
| EZ UNION LIMITED | Private company limited by shares | Live |
| KENT UNION TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| KING UNION PROPERTY CONSULTANTS LIMITED | Private company limited by shares | Live |
| CHANCE UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION TOPPER DEVELOPMENT LIMITED | Private company limited by shares | Live |
| HK Decheng International Union Industry Group Limited | Private company limited by shares | Live |
| UNION INDUSTRY GROUP LIMITED | Private company limited by shares | Live |
| UNION RICH INDUSTRY LIMITED | Private company limited by shares | Live |
| YU YOU PROPERTY UNION GROUP LIMITED | Private company limited by shares | Live |
| UNION HUGE DEVELOPMENT LIMITED | Private company limited by shares | Live |
| GIANT UNION LIMITED | Private company limited by shares | Live |
| UNION LUCKY TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| UPLUS UNION FURNITURE (HK) CO., LIMITED | Private company limited by shares | Live |
| Union Rich Shipping Limited | Private company limited by shares | Live |
| Top Union Auto Limited | Private company limited by shares | Live |
| UNION HANSON TRADE LIMITED | Private company limited by shares | Live |
| HK Union One Trading Limited | Private company limited by shares | Live |
| UNION ACT LIMITED | Private company limited by shares | Live |
| ROCKY UNION TRADE LIMITED | Private company limited by shares | Live |
| Hing Yip Union Mechanics (Hong Kong) Limited | Private company limited by shares | Live |
| HK UNION QINGTENG LIMITED | Private company limited by shares | Live |
| GLOBAL UNION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| EVER-GLORY UNION (HK) CO., LIMITED | Private company limited by shares | Live |
| GREAT UNION GLOBAL LIMITED | Private company limited by shares | Live |
| UNION LUCKY LIMITED | Private company limited by shares | Live |
| GAIN UNION LIMITED | Private company limited by shares | Live |
| CHINA UNION MINING CO., LIMITED | Private company limited by shares | Live |
| HERO UNION TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| Union Town Global Limited | Private company limited by shares | Live |
| SHANDONG UNION IMPORT AND EXPORT CO., LIMITED | Private company limited by shares | Live |
| Joy Union International Trading Limited | Private company limited by shares | Live |
| Union Capital Realty HK Limited | Private company limited by shares | Live |
| UNION MORE TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| UNIONCHEM LIMITED | Private company limited by shares | Live |
| UNION OCEAN MARINE SERVICES COMPANY LIMITED | Private company limited by shares | Live |
| YU TAI UNION INVESTMENT CO., LIMITED | Private company limited by shares | Live |
| UNION COFFEE F&B LIMITED | Private company limited by shares | Live |
| Best Union Athletic Association Limited | Private company limited by shares | Live |
| Best Union Realty Limited | Private company limited by shares | Live |
| UNION CYBER COMPANY LIMITED | Private company limited by shares | Live |
| RICH UNION INVESTMENT HOLDINGS LIMITED | Private company limited by shares | Live |
| Virtue Wealth Union Electronic Co., Limited | Private company limited by shares | Live |
| Union Pass International Logistic Limited | Private company limited by shares | Live |
| Union Venture Management Limited | Private company limited by shares | Live |
| UNION THREE LIMITED | Private company limited by shares | Live |
| Highland Union Industry Limited | Private company limited by shares | Live |
| SIFANG UNION CO., LIMITED | Private company limited by shares | Live |
| UNION YT HOLDINGS CO., LIMITED | Private company limited by shares | Live |
| Union Part Supplies Limited | Private company limited by shares | Live |
| UNION MEGA LIMITED | Private company limited by shares | Live |
| H.K. PINGTAN UNION ASSOCIATION (GENERAL) LIMITED | Company limited by guarantee | Live |
| UNION TEXTILES DYEING LIMITED | Private company limited by shares | Live |
| Union Network Worldwide Co., Limited | Private company limited by shares | Live |
| UNION (HONGKONG) INTERNATIONAL TRADE LIMITED | Private company limited by shares | Live |
| New Union ShenZhen Limited | Private company limited by shares | Live |
| UnionHive Limited | Private company limited by shares | Live |
| International Union Of Scientists Limited | Private company limited by shares | Live |
| HUB UNION (HK) CO., LIMITED | Private company limited by shares | Live |
| Union AIT Limited | Private company limited by shares | Live |
| UNION SKYWAY LIMITED | Private company limited by shares | Live |
| SINO UNION GROUP HOLDING LIMITED | Private company limited by shares | Live |
| EVER UNION CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Live |