| UNIEXPO TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIFIED TECHNOLOGY & MACHINERY COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNICORP TRADING LIMITED | Private company limited by shares | Dissolved |
| MARVELOUS UNION INT'L ENTERPRISE GROUP LIMITED | Private company limited by shares | Dissolved |
| UNI-RICH LIMITED | Private company limited by shares | Dissolved |
| UNION TECH DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNITONE INVESTMENTS LIMITED | Private company limited by shares | Live |
| CHINA INTERNATIONAL EATABLES (MEDICINE) FUNGUS MARKET SALES UNION LIMITED | Private company limited by shares | Dissolved |
| NEW UNIVERSE ENVIRONMENTAL TECHNOLOGIES (JIANG SU) LIMITED | Private company limited by shares | Live |
| UNI-FASHIONS COMPANY 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 |
| UNISIGN LIMITED | Private company limited by shares | Dissolved |
| UNION JET INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION FAR EAST LIMITED | Private company limited by shares | Live |
| NEW UNI-TECH (ASIA) COMPANY LIMITED | Private company limited by shares | Dissolved |
| 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 |
| CHINA UNI-ZEN CENTER COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL INVESTMENT GROUP LIMITED | Private company limited by shares | Live |
| UNIVERSAL WIN INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNION ENTERPRISE HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION GAIN INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| POLYWELL UNIVERSAL LIMITED | Private company limited by shares | Live |
| TOP UNION CAPITAL LIMITED | Private company limited by shares | Dissolved |
| UNION TEXTILES EXPORT & IMPORT COMPANY LIMITED | Private company limited by shares | Live |
| UNIVERSAL LINK LIMITED | Private company limited by shares | Dissolved |
| UNITED CONTRACTORS 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 |
| UNITED FORTUNE TIMBER RESOURCES LIMITED | Private company limited by shares | Live |
| UNIVERSAL ASIA TEXTILES COMPANY LIMITED | Private company limited by shares | Dissolved |
| SINDA UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNITED CHAMPION ASIA LIMITED | Private company limited by shares | Dissolved |
| UNITECH SYSTEM INTERNATIONAL (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SMART UNION ASIA LIMITED | Private company limited by shares | Dissolved |
| UNIHON LIMITED | Private company limited by shares | Dissolved |
| UNITED CAPITAL ASIA LIMITED | Private company limited by shares | Dissolved |
| CIRCLE UNION WORLDWIDE LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL TECH 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 |
| UNIPHARM INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNITARP CO., LIMITED | Private company limited by shares | Dissolved |
| SUNFIELD UNIVERSAL LIMITED | Private company limited by shares | Live |
| 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 |
| UNITY TRAVEL LIMITED | Private company limited by shares | Live |
| UNIVERSAL OPTICAL SERVICE CENTRE 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 |
| UNICORP (HONG KONG) PTE LIMITED | Private company limited by shares | Live |
| UNIGLOBE PRODUCTIONS LIMITED | Private company limited by shares | Dissolved |
| ROY UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| PREFERRED EQUITY UNDERWRITERS 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 |
| UNI-HEALTH COMPANY 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 |
| UNIPRO SYSTEMS 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 |
| STAR UNIVERSE SECRETARIES LIMITED | Private company limited by shares | Live |
| UNICARE 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 |