| UNITED EDUTAINMENT LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL SHIPPING LIMITED | Private company limited by shares | Live |
| UNION BUSINESS HOLDINGS LIMITED | Private company limited by shares | Live |
| ASIAN UNION TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| SINO UNION DYEING FACTORY LIMITED | Private company limited by shares | Live |
| UNIQUE WAY LIMITED | Private company limited by shares | Live |
| UNITED STAR CAPITAL INVESTMENT LIMITED | Private company limited by shares | Live |
| Hong Kong Culture And Art Union Limited | Private company limited by shares | Dissolved |
| BEST UNION STEEL CO., LIMITED | Private company limited by shares | Live |
| Silver Union (HK) Investment Limited | Private company limited by shares | Dissolved |
| NEW UNIVERSAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| UNIFOR MACHINERY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNIVERSAL DESIGN & ENGINEERING LIMITED | Private company limited by shares | Live |
| UNIC PLASTECH COMPANY LIMITED | Private company limited by shares | Live |
| UNIVERTEAM LIMITED | Private company limited by shares | Live |
| LEARNING UNION (CHINA) EDUCATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNICRYSTAL LIMITED | Private company limited by shares | Live Commenced dormancy on 18-Mar-2014 |
| AEROSPACE UNION LIMITED | Private company limited by shares | Live |
| Union Best Cultural Investment Limited | Private company limited by shares | Dissolved |
| UNITED COSMETIC GROUP LIMITED | Private company limited by shares | Live |
| UNIVERSAL LINK INC LIMITED | Private company limited by shares | Live |
| SUCCESS UNION INC LIMITED | Private company limited by shares | Live |
| UNION CITY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNIVERSAL RICH TRADING LIMITED | Private company limited by shares | Dissolved |
| EXCEL UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED LEGEND LIMITED | Private company limited by shares | Live |
| UNIFIED TRADING CO., LIMITED | Private company limited by shares | Live |
| HUAMEI UNION INT'L LIMITED | Private company limited by shares | Dissolved |
| WORLD CHINESE FINANCIER UNION LIMITED | Private company limited by shares | Live |
| Tung Union Construction Limited | Private company limited by shares | Live |
| EAST UNION RESTAURANT LIMITED | Private company limited by shares | Live |
| BROAD UNION CO., LIMITED | Private company limited by shares | Live |
| GREAT UNION TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| HK HISTING UNIVERSAL CO., LIMITED | Private company limited by shares | Live |
| UNION PLASTICS GROUP CO., LIMITED | Private company limited by shares | Live |
| TECH UNITED LIMITED | Private company limited by shares | Live |
| MASTER UNION TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNISTAR ENTERPRISE LIMITED | Private company limited by shares | Live |
| New Union Fortune International Trading Limited | Private company limited by shares | Live |
| YEHO UNDERWATER RESORT LIMITED | Private company limited by shares | Live |
| Universal Education Limited | Private company limited by shares | Live |
| GRAND UNIVERSAL PETROCHEMICAL LIMITED | Private company limited by shares | Live |
| Star Union Products Co., Limited | Private company limited by shares | Dissolved |
| UNI-LOYAL INTERNATIONAL ENTERPRISES LIMITED | Private company limited by shares | Live |
| BOSS UNION LIMITED | Private company limited by shares | Live |
| CHINA QATAR UNION PROCUREMENT LIMITED | Private company limited by shares | Live |
| CHINA CULTURE WEALTH UNION CO., LIMITED | Private company limited by shares | Live |
| CHINA CULTURE FORTUNE UNION CO., LIMITED | Private company limited by shares | Live |
| ZHONGYUAN CULTURE FORTUNE UNION CO., LIMITED | Private company limited by shares | Live |
| DS UNION POWER LIMITED | Private company limited by shares | Live |
| Keystone Union Limited | Private company limited by shares | Live |
| HK EAST UNION INVESTMENT MANAGEMENT CO., LIMITED | Private company limited by shares | Live |
| iTrade Universal Company Limited | Private company limited by shares | Live |
| UNION TREND INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION ABLE LIMITED | Private company limited by shares | Dissolved |
| FULL UNION TRADING LIMITED | Private company limited by shares | Live |
| UNION SUCCESS TRADING LIMITED | Private company limited by shares | Live |
| UNION SENSE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| JOINT UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION GREAT INC LIMITED | Private company limited by shares | Dissolved |
| Grand United First Company Limited | Private company limited by shares | Live |
| UNIVERSE STAR INT'L TRADING LIMITED | Private company limited by shares | Live |
| Hong Kong UniDC Trading Co., Limited | Private company limited by shares | Live |
| Uni-Smart Technology Co., Limited | Private company limited by shares | Live |
| WORLD WEDDING UNION LIMITED | Private company limited by shares | Live |
| E & C UNION INSURANCE AGENT LIMITED | Private company limited by shares | Live |
| UNITED MARK INC LIMITED | Private company limited by shares | Live |
| SKY UNITY INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| FORTUNE UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| UniIC ADVANCED TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNION ENGINEERING TRADING LIMITED | Private company limited by shares | Live |
| BEST UNION TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| WESTER UNION COMPANY LIMITED | Private company limited by shares | Dissolved |
| GLOBAL UNION WEALTH MANAGEMENT LIMITED | Private company limited by shares | Live |
| UNIVERSAL HEALTH SOLUTIONS LIMITED | Private company limited by shares | Live |
| UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNIONLIGHT OPTOELECTRONICS COMPANY LIMITED | Private company limited by shares | Live |
| Universal Edutainment Limited | Private company limited by shares | Live |
| Uni-Prosperity (Hong Kong) Holdings Co., Limited | Private company limited by shares | Live |
| Gift Union Co., Limited | Private company limited by shares | Live |
| UNION HOLDING DEVELOPMENT LIMITED | Private company limited by shares | Live |
| PACIFIC UNITED LIMITED | Private company limited by shares | Dissolved |
| UNITED DYNASTY LIMITED | Private company limited by shares | Live |
| UNION PLAY LIMITED | Private company limited by shares | Live |
| UNION CHEER (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION PROSPER INTERNATIONAL LIMITED | Private company limited by shares | Live |
| RISING UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION TONE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Universal Strategic Management Limited | Private company limited by shares | Live |
| UNITED ONLINE COMPANY LIMITED | Private company limited by shares | Live |
| Unison Capital Management Limited | Private company limited by shares | Dissolved |
| STRIDE UNION INTERNATIONAL LOGISTICS LIMITED | Private company limited by shares | Live |
| Unisource Logistics Limited | Private company limited by shares | Live |
| UNITSTAR TECH LIMITED | Private company limited by shares | Live |
| GUANGZHOU UNIVERSAL LIMITED | Private company limited by shares | Live |
| NEW UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| NEW UNION LIMITED | Private company limited by shares | Live |
| TOP UNION TRADING LIMITED | Private company limited by shares | Live |
| UNION SINO DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |