| XSD UNION SOLAR TECH LIMITED | Private company limited by shares | Live |
| UNION WIN SHIPPING (HK) LIMITED | Private company limited by shares | Live |
| Asian Union Quality Inspection Center Limited | Private company limited by shares | Live |
| GLOBAL WOMAN ENTREPRENEUR UNION LIMITED | Company limited by guarantee | Live |
| Union Rich Engineering & Consultancy Limited | Private company limited by shares | Live |
| Social Workers Education Union Limited | Company limited by guarantee | Live |
| TRUMP UNION LIMITED | Private company limited by shares | Live |
| SURE UNION LIMITED | Private company limited by shares | Live |
| ALLIED UNION LIMITED | Private company limited by shares | Live |
| Kwai Tsing Harmonious Union Limited | Company limited by guarantee | Live |
| UNION CORE SEMICONDUCTOR CO., LIMITED | Private company limited by shares | Live |
| Fung Wah International Union Limited | Private company limited by shares | Live |
| Tsuen Wan Harmonious Union Limited | Company limited by guarantee | Live |
| Union of science and Engineering Publishing Limited | Private company limited by shares | Live |
| NEW UNION INTERNATIONAL RESOURCES CO., LIMITED | Private company limited by shares | Live |
| PUBLIC HEALTH UNION LIMITED | Private company limited by shares | Live |
| Pet Pet Union Club Limited | Private company limited by shares | Live |
| Eagle Union Legal Consulting Limited | Private company limited by shares | Live |
| RCEP STARS AND SEA UNION LIMITED | Private company limited by shares | Live |
| HONG KONG TECH UNION GROUP LIMITED | Private company limited by shares | Live |
| Union Tech Group (H.K.) Limited | Private company limited by shares | Live |
| HONGKONG RONGJITANG WORLD PUBLIC WELFARE UNION LIMITED | Private company limited by shares | Live |
| CYBER UNION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNION LINK ENGINEERING LIMITED | Private company limited by shares | Live |
| ASIA UNION TRADING LIMITED | Private company limited by shares | Live |
| MAX STAR UNION LIMITED | Private company limited by shares | Live |
| MULTI UNION MEGA TRADE LIMITED | Private company limited by shares | Live |
| Medica Union TCM Clinic Limited | Private company limited by shares | Live |
| Yun VC Union International Holding Co., Limited | Private company limited by shares | Live |
| UNION STAR GROUP HOLDING LIMITED | Private company limited by shares | Live |
| Union Vert International Trading Limited | Private company limited by shares | Live |
| Unionhat Fashions Manufacturing Co., Limited | Private company limited by shares | Live |
| NEW UNION TOP (HONG KONG) LIMITED | Private company limited by shares | Live |
| BRIGHT UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| Hong Kong Heart Union Limited | Company limited by guarantee | Live |
| Three Union Environmental Service Company Limited | Private company limited by shares | Live |
| UNION TECH HOLDINGS CO., LIMITED | Private company limited by shares | Live |
| Kingsway Union Limited | Private company limited by shares | Live |
| UNION STAR ELECTRONICS LIMITED | Private company limited by shares | Live |
| SMART UNION CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Live |
| UNION PLUS (HK) LIMITED | Private company limited by shares | Live |
| Universal Resource Reallocation Union Holdings Limited | Private company limited by shares | Live |
| STAR UNION CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Live |
| ASTUTE UNION LIMITED | Private company limited by shares | Live |
| UNION FAITH CORPORATION LIMITED | Private company limited by shares | Live |
| GLOBAL UNION MANAGEMENT LIMITED | Private company limited by shares | Live |
| GLOBAL UNION ENTERPRISE LIMITED | Private company limited by shares | Live |
| GLOBAL UNION ALLIED LIMITED | Private company limited by shares | Live |
| BEST UNION SUPPLY CHAIN LIMITED | Private company limited by shares | Live |
| Hong Kong Mountain Guides Union Limited | Private company limited by shares | Live |
| LUCKY UNION CORPORATION LIMITED | Private company limited by shares | Live |
| UNION GREAT INVESTMENT LIMITED | Private company limited by shares | Live |
| Linked Union International Development Limited | Private company limited by shares | Live |
| UNION SOCIAL SERVICES ORGANISATION LIMITED | 擔保有限公司 | Live |
| M UNION CONSULTANCY LIMITED | Private company limited by shares | Live |
| UNION CROWN LIMITED | Private company limited by shares | Live |
| UNION STAR TEXTILE ENTERPRISES LIMITED | Private company limited by shares | Live |
| STAR UNION LIMITED | Private company limited by shares | Live |
| UNION SKY LIMITED | Private company limited by shares | Live |
| New Bauhinia Union Limited | Private company limited by shares | Live |
| Trans Union System Limited | Private company limited by shares | Live |
| World Doctors Union Holdings Co., Limited | Private company limited by shares | Live |
| UNION HARVEST INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Live |
| Paradise Union Enterprises Limited | Private company limited by shares | Live |
| NEW UNION WEALTH LIMITED | Private company limited by shares | Live |
| UNION VENTURES LIMITED | Private company limited by shares | Live |
| CHARM UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| Agriculture Union Trading Co., Limited | Private company limited by shares | Live |
| Union furniture and hardware Limited | Private company limited by shares | Live |
| Union Water Sport Club Limited | Private company limited by shares | Live |
| SINO UNION CATERING LIMITED | Private company limited by shares | Live |
| WEALTHY UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION WAVE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Fou Rich Union Limited | Private company limited by shares | Live |
| Union Marketing (Hong Kong) Limited | Private company limited by shares | Live |
| World Friendship Union Limited | Private company limited by shares | Live |
| CHINESE MARTIAL ARTS UNION CO., LIMITED | Private company limited by shares | Live |
| Asia Union Maritime Services Company Limited | Private company limited by shares | Live |
| Fatony Union Limited | Private company limited by shares | Live |
| Union Auto Engineering & Equipment Limited | Private company limited by shares | Live |
| SKY UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| FOSHAN UNION STEEL METALS CO., LIMITED | Private company limited by shares | Live |
| World Trade Union Group Company Limited | Private company limited by shares | Live |
| HONGKONG GRAND UNION INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| KAMI UNION TRADING LIMITED | Private company limited by shares | Live |
| UNION SUPREME INTERNATIONAL EQUIPMENT CO., LIMITED | Private company limited by shares | Live |
| UNION STAR COLLECTION CO., LIMITED | Private company limited by shares | Live |
| Union International Professional Baby-Care Training Limited | Private company limited by shares | Live |
| UNION WORLD TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| Global Young Entrepreneur Union Limited | Private company limited by shares | Live |
| CHINA FIRST UNION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SINO UNION CONSTRUCTION ENGINEERING CO., LIMITED | Private company limited by shares | Live |
| Union Chinese Medicine Clinic Limited | Private company limited by shares | Live |
| UNION ALPHA PROFESSIONAL SERVICES LIMITED | Private company limited by shares | Live |
| CHINA ACF UNION (HK) TECHNOLOGY LIMITED | Private company limited by shares | Live |
| CHANCE UNION LIMITED | Private company limited by shares | Live |
| Net Union International Holdings Co., Limited | Private company limited by shares | Live |
| CHRISTIAN SHONE TAO ASSOCIATION UNION CHURCH LIMITED | 擔保有限公司 | Live |
| UNION MOTION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| TREASURE UNION LIMITED | Private company limited by shares | Live |