| HILL UNION (HONG KONG) LIMITED | Private company limited by shares | Live |
| INTERNATIONAL ENTERPRISES' RIGHTS SECURITY UNION LIMITED -THE- | Private company limited by shares | Live |
| MYANMAR OVERSEAS UNION LIMITED | Private company limited by shares | Live |
| OCEAN UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| NEW UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| GOLD UNION INTERNATIONAL INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| ON UNION CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNION CHOICE HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION SUNNY INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| JAC UNION TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION CYBER TECHNOLOGIES (H.K.) LIMITED | Private company limited by shares | Dissolved |
| TWIN UNION INT'L GROUP (HK) CO. LIMITED | Private company limited by shares | Dissolved |
| UNION CHAMPION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION MEDICARE COMPANY LIMITED | Private company limited by shares | Dissolved |
| WORLD BEAUTY ELITE UNION FOUNDATION LIMITED | Private company limited by shares | Dissolved |
| UNION GAIN INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SINO UNION MOTORS LIMITED | Private company limited by shares | Dissolved |
| MARVELOUS UNION INT'L ENTERPRISE GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION TECH DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| CHINA INTERNATIONAL EATABLES (MEDICINE) FUNGUS MARKET SALES UNION LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| OPEN UNION LIMITED | Private company limited by shares | Live |
| UNION JET INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION FAR EAST LIMITED | Private company limited by shares | Live |
| I UNION TRAVEL (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| WIN UNION CORPORATION LIMITED | Private company limited by shares | Live |
| INTERNATIONAL VOCATION UNION LIMITED | Private company limited by shares | Dissolved |
| ASIA UNION (H.K.) LIMITED | Private company limited by shares | Live |
| UNION JS EYEWARE (HK) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION ENTERPRISE HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION GAIN INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| TOP UNION CAPITAL LIMITED | Private company limited by shares | Dissolved |
| UNION TEXTILES EXPORT & IMPORT COMPANY LIMITED | Private company limited by shares | Live |
| SILVER UNION GROUP LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION LOGISTICS LIMITED | Private company limited by shares | Dissolved |
| KING UNION ASSOCIATES LIMITED | Private company limited by shares | Live |
| SMART UNION ASIA LIMITED | Private company limited by shares | Dissolved |
| CIRCLE UNION WORLDWIDE LIMITED | Private company limited by shares | Dissolved |
| CROWN UNION LIMITED | Private company limited by shares | Live |
| SUPER UNION LIMITED | Private company limited by shares | Live |
| INTERNATIONAL BRAND UNION GROUP (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION WILL LIMITED | Private company limited by shares | Live |
| UNION WAY ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION LEADER INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION CONSTRUCTION ENG. LIMITED | Private company limited by shares | Dissolved |
| JOY UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION WIDE INVESTMENT LIMITED | Private company limited by shares | Live |
| GRACE UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| HKC UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| Ever Union Services Development Limited | Private company limited by shares | Live |
| ROY UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION EDUCATION MANAGEMENT LIMITED | Private company limited by shares | Live |
| SMART UNION CHINA INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION MEDICAL SCIENTIFIC LIMITED | Private company limited by shares | Dissolved |
| RIGHT UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| TOP UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| MAIN UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SUPREME UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION AUDIO SYSTEMS INTERNATIONAL INC. LIMITED | Private company limited by shares | Dissolved |
| RICH UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| FIRST UNION (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION HEART DEVELOPMENT LIMITED | Private company limited by shares | Live |
| HONG KONG PROSPERITY UNION TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Union International Development Limited | Private company limited by shares | Live |
| UNION PROFIT INDUSTRIES LIMITED | Private company limited by shares | Live |
| GAIN UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION HANG YIP CO LIMITED | Private company limited by shares | Dissolved |
| NETWORK UNION ENGINEERING LIMITED | Private company limited by shares | Live |
| STAR UNION (H.K.) LIMITED | Private company limited by shares | Dissolved |
| STAR UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION LEGEND DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION SINO (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION SINO INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| CHAMPION UNION (CHINA) COMPANY LIMITED | Private company limited by shares | Live |
| UNION BEST INDUSTRIAL (HK) LIMITED | Private company limited by shares | Dissolved |
| UNION CHEMICALS ENTERPRISE COMPANY LIMITED | Private company limited by shares | Live |
| UNION SMART INVESTMENT LIMITED | Private company limited by shares | Live |
| SMART UNION LOGISTICS LIMITED | Private company limited by shares | Live |
| ASIA PACIFIC UNION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| ELITE UNION ASIA LIMITED | Private company limited by shares | Dissolved |
| UNION SINO DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION DEVELOPMENT CHEMICAL TECHNOLOGY CORPORATION LIMITED | Private company limited by shares | Dissolved |
| Union Environmental Logistic Company Limited | Private company limited by shares | Dissolved |
| HL UNION INTERNATIONAL DEV. (H.K.) LIMITED | Private company limited by shares | Live |
| CHAT UNION CLIMAVENETA COMPANY LIMITED | Private company limited by shares | Live |
| UNION (HONG KONG) TRADING CO. LIMITED | Private company limited by shares | Live |
| UNION BRIGHT TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNION EAST TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| SHARP UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION AHEAD INVESTMENT LIMITED | Private company limited by shares | Live |
| GENIUS UNION LIMITED | Private company limited by shares | Dissolved |
| SUCCESS UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION CREATOR LIMITED | Private company limited by shares | Dissolved |
| WELL UNION ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| TIME UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION BUILDING MATERIAL LIMITED | Private company limited by shares | Dissolved |
| ELITE UNION (HONG KONG) LIMITED | Private company limited by shares | Live |
| UNION GLORY INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| CHIU YIN CHINA & U.S.A. UNION EDUCATION LIMITED | Private company limited by shares | Dissolved |
| ZHONG HAI CHEER UNION ENTERPRISE LIMITED | Private company limited by shares | Dissolved |