| MATE UNION LIMITED | Private company limited by shares | Live |
| UNIPOWER E&M LIMITED | Private company limited by shares | Live |
| Uniwell Group Company Limited | Private company limited by shares | Live |
| UNITEK LIMITED | Private company limited by shares | Dissolved |
| NEW UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNISOURCE HONG KONG LIMITED | Private company limited by shares | Dissolved |
| UNION RESOURCE GROUP LIMITED | Private company limited by shares | Live |
| GREAT UNION GLOBAL EXPRESS AGENCY LIMITED | Private company limited by shares | Live |
| LEGEND UNIVERSE LIMITED | Private company limited by shares | Dissolved |
| UNION WEALTH INTERNATIONAL INVESTMENT GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION GOLD INTERNATIONAL INVESTMENT GROUP COMPANY LIMITED | Private company limited by shares | Dissolved |
| POINT UNION LIMITED | Private company limited by shares | Live |
| UNITED TALENT INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| CHINA LEARNING UNION CO., LIMITED | Private company limited by shares | Dissolved |
| UNION MAKER LIMITED | Private company limited by shares | Dissolved |
| UNION FOUNDER LIMITED | Private company limited by shares | Live Commenced dormancy on 08-Jun-2010 |
| HK UNIVERSE INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| SINO UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| GMS Universal Limited | Private company limited by shares | Live |
| UNION SURPLUS LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL WEALTH CREATION LIMITED | Private company limited by shares | Dissolved |
| UNITED FINANCE LIMITED | Private company limited by shares | Live |
| UNIVERSAL TRAVEL GROUP (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| CHINA UNIVERSITY OF ECONOMICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| INT'L BRAND UNION LIMITED | Private company limited by shares | Live |
| UNION TECHNOLOGY (HK) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNI-WELL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNI-WAY TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| HONGKONG CHINESE UNION INVESTMENT CO., LIMITED | Private company limited by shares | Dissolved |
| HK THREE UNION SHOES LIMITED | Private company limited by shares | Dissolved |
| UNION STAR HONG KONG INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL DEVELOP LIMITED | Private company limited by shares | Dissolved |
| UNITED MINERAL RESOURCES CO., LIMITED | Private company limited by shares | Dissolved |
| PCCW UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| FOREST LINE UNION HOLDINGS CO., LIMITED | Private company limited by shares | Live |
| Wise Union Industry Co., Limited | Private company limited by shares | Live |
| SPLENDOUR UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNITED NATIONS EMERGENCY RESCUE ASIA CENTER LIMITED | Private company limited by shares | Live |
| UNICON INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNITECH Asia Technologies Pvt. Limited | Private company limited by shares | Live |
| Ningbo Far-East Underwater Engineering Co., Limited | Private company limited by shares | Dissolved |
| UNITECH ENGINEERING (HONG KONG) LIMITED | Private company limited by shares | Live |
| HISEA UNION SHIPPING (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| UNO-STEEL GROUP LIMITED | Private company limited by shares | Live |
| SPARK UNIVERSE CO., LIMITED | Private company limited by shares | Live |
| UNIVERSE TECHNOLOGIES CO., LIMITED | Private company limited by shares | Dissolved |
| UNITED AVENUE LIMITED | Private company limited by shares | Live |
| UNION ENGINEERING MACHINERY CO., LIMITED | Private company limited by shares | Live |
| UNIVERSAL FORTUNE LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL RICH GLOBAL LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL INDUSTRY LIMITED | Private company limited by shares | Dissolved |
| UNION FAMOUS DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNIS INTERNATIONAL (H.K.) CO., LIMITED | Private company limited by shares | Dissolved |
| UNIMC & COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION ACTION LIMITED | Private company limited by shares | Dissolved |
| UNION CATHAY UPM HOLDING LIMITED | Private company limited by shares | Dissolved |
| UNION JOY INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION BASE INVESTMENT (GROUP) LIMITED | Private company limited by shares | Dissolved |
| UNION HONOR INTERNATIONAL ENTERPRISE LIMITED | Private company limited by shares | Live |
| UNION PROJECT SERVICE COMPANY LIMITED | Private company limited by shares | Live |
| UNISTAR LIMITED | Private company limited by shares | Dissolved |
| ORIENTAL SINO UNION OE TEK LIMITED | Private company limited by shares | Dissolved |
| UNION DEVELOP LIMITED | Private company limited by shares | Dissolved |
| UNI-HARVEST LIMITED | Private company limited by shares | Dissolved |
| UNION FAITH INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNION SINO LIMITED | Private company limited by shares | Live |
| GOLD UNITED LIMITED | Private company limited by shares | Live |
| ORIENTAL UNITED LIMITED | Private company limited by shares | Dissolved |
| UNION LAND TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION PACIFIC TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION HONEST ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL ENLIGHTENMENT BUDDHIST ASSOCIATION | Company limited by guarantee | Live |
| UNION EXTENSION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNIVERSE TECHNOLOGY (HK) CORPORATION LIMITED | Private company limited by shares | Dissolved |
| UNION TECH LIMITED | Private company limited by shares | Dissolved |
| UNION INTERNATIONAL TRADING (HK) LIMITED | Private company limited by shares | Dissolved |
| Union Finance Investment Group Co., Limited | Private company limited by shares | Dissolved |
| UNIVERSAL BRIGHT ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNITECHEM INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNIVERSAL GEOMANTIC OMEN GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION STATE (H.K.) LIMITED | Private company limited by shares | Live |
| UNIVERSAL FINANCE LIMITED | Private company limited by shares | Dissolved |
| UNION LINK TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNIWELL HIGH-TECH LIMITED | Private company limited by shares | Dissolved |
| FOREVER UNION LIMITED | Private company limited by shares | Live |
| UNION ELECTRONICS TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNAR DESIGN LIMITED | Private company limited by shares | Live |
| UNIVERSAL MOTOR MANUFACTURING LIMITED | Private company limited by shares | Live |
| UNITED WEALTH INVESTMENTS LIMITED | Private company limited by shares | Live |
| Union Warehouse Co., Limited | Private company limited by shares | Live |
| UNION LANDUSE PLANMASTERS (HK) LIMITED | Private company limited by shares | Dissolved |
| VIGOROUS UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| NEW ART UNION LIMITED | Private company limited by shares | Live |
| GOLDEN OCEAN UNION LIMITED | Private company limited by shares | Dissolved |
| RICH UNITED LIMITED | Private company limited by shares | Dissolved |
| WONDERFUL TIME UNION ENERGY LIMITED | Private company limited by shares | Dissolved |
| Unique Manufacturing Limited | Private company limited by shares | Live |
| UNION BEST DEVELOP LIMITED | Private company limited by shares | Dissolved |
| UNION MATE DEVELOP LIMITED | Private company limited by shares | Dissolved |
| UNITED DEVELOP LIMITED | Private company limited by shares | Dissolved |