| United People Limited | Private company limited by shares | Live |
| UNION LINKER LIMITED | Private company limited by shares | Live |
| UNION PACIFIC (HK) CORPORATION LIMITED | Private company limited by shares | Dissolved |
| UNION MARINE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| EASTERN UNION ENTERPRISE CORPORATION LIMITED | Private company limited by shares | Live |
| CNA UNIVERSITY SCHOOL ALLIANCE LIMITED | Private company limited by shares | Live |
| FRIEND UNION INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| CHINESE UNITY ZHAOYE INVESTMENT GROUP LIMITED | Private company limited by shares | Dissolved |
| LINK UNION TRADING LIMITED | Private company limited by shares | Live |
| UNION LUCK INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| SKY UNION INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Live |
| ASIAN UNION ELECTRONIC (HONGKONG) LIMITED | Private company limited by shares | Live |
| UNIQUE ONE LIMITED | Private company limited by shares | Dissolved |
| KEEN UNION LIMITED | Private company limited by shares | Dissolved |
| UNION SMART CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNITED VIEW PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| G.T.C. UNION GROUP LIMITED | Private company limited by shares | Live |
| UNIQUE JEWELS LIMITED | Private company limited by shares | Live |
| Qiming Universal Limited | Private company limited by shares | Live |
| UNIVERSAL MAGNETS CO., LIMITED | Private company limited by shares | Dissolved |
| UNION FRIEND CAN INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| GREAT UNIVERSE TRADING LIMITED | Private company limited by shares | Live |
| UNIBURG LIMITED | Private company limited by shares | Dissolved |
| UNION PROFIT INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| CHINA TECHNOLOGICAL ENTERPRISE UNION LIMITED | Private company limited by shares | Dissolved |
| United Power Pharmatech Co., Limited | Private company limited by shares | Live |
| UNION INT'L INVESTMENT&DEVELOPMENT CO., LIMITED | Private company limited by shares | Dissolved |
| UNION PACKAGING (HK) CO., LIMITED | Private company limited by shares | Live |
| UNITRON ELECTRONICS TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNION FOOD COMPANY LIMITED | Private company limited by shares | Live |
| A PLUS DESIGN UNION (HK) LIMITED | Private company limited by shares | Live |
| UNI-CHOICE LIMITED | Private company limited by shares | Dissolved |
| WEALTHY UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION CHOICE WORLDWIDE LIMITED | Private company limited by shares | Live |
| UNION RICH TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION RICH (H.K.) LIMITED | Private company limited by shares | Live |
| UNITECH INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION RICH HONG KONG GROUP LIMITED | Private company limited by shares | Live |
| UNION CONCEPT INTERNATIONAL INDUSTRIAL LIMITED | Private company limited by shares | Live |
| MEGA UNION CREATION LIMITED | Private company limited by shares | Live |
| EAST UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNI-IMPACT LIMITED | Private company limited by shares | Live |
| UNION REACHED ENTERPRISES LIMITED | Private company limited by shares | Live |
| CHINA UNITED PROPERTIES AGENT COMPANY LIMITED | Private company limited by shares | Live |
| GOOD LIFE UNION GROUP (H.K.) LIMITED | Private company limited by shares | Live |
| UNIWELL TRADING LIMITED | Private company limited by shares | Dissolved |
| EAST UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| HARMONY INTERNATIONAL UNION LIMITED | Private company limited by shares | Dissolved |
| GLORY UNION (CHINA) LIMITED | Private company limited by shares | Live |
| Union Communications Technologies (China) Co., Limited | Private company limited by shares | Dissolved |
| UNIVERSAL SERVICE CENTRE LIMITED | Private company limited by shares | Live |
| JOYFUL UNION LIMITED | Private company limited by shares | Live |
| GOOD UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNITED GRAND TRADING LIMITED | Private company limited by shares | Dissolved |
| ALL UNITED LIMITED | Private company limited by shares | Live |
| UNION ON ASIA GROUP LIMITED | Private company limited by shares | Live |
| UNITE CAPITAL LIMITED | Private company limited by shares | Live |
| TERNATIONALI CHIN EXPERT CELEBRITY UNION LIMITED | Private company limited by shares | Live |
| UNITED SWIMMING CENTER LIMITED | Private company limited by shares | Dissolved |
| GAIN UNION (H.K.) LIMITED | Private company limited by shares | Live |
| MILLION UNION WORLDWIDE LIMITED | Private company limited by shares | Live |
| UNION KITCHEN CO., LIMITED | Private company limited by shares | Dissolved |
| Union Finance Investment Management Co., Limited | Private company limited by shares | Dissolved |
| UNION INTERNATIONAL NEWSPAPER GROUP INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION PACIFIC DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION GLOBE DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION GLOBAL INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Live |
| GOLDEN UNION INTERNATIONAL INDUSTRIES LIMITED | Private company limited by shares | Live |
| RICH UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNIVO (HONG KONG) CO., LIMITED | Private company limited by shares | Dissolved |
| UNION CENTURY INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| SUPER UNION LEGEND LIMITED | Private company limited by shares | Live |
| KEEN UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| United Truth Enterprise Company Limited | Private company limited by shares | Live |
| WORLD OLD AGE UNION DEVELOPMENT FOUNDATION LIMITED | Private company limited by shares | Dissolved |
| UNION ICE TRADING LIMITED | Private company limited by shares | Live |
| UNITED POWER TECH SECURITY (HK) CO., LIMITED | Private company limited by shares | Live |
| Brothers Union (Hongkong) International Co., Limited | Private company limited by shares | Live |
| UNION BASIC ENTERPRISES LIMITED | Private company limited by shares | Live |
| HMV Universal Limited | Private company limited by shares | Dissolved |
| EU Union Limited | Private company limited by shares | Dissolved |
| FIRST UNITED INVESTMENT (GROUP) LIMITED | Private company limited by shares | Live |
| BEST UNITED INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION LEGEND INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNITED BROTHERS TRANSPORT LIMITED | Private company limited by shares | Dissolved |
| UNION CIRCUITS CO., LIMITED | Private company limited by shares | Live |
| EAST UNIVERSE INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Live |
| HIEDU INTERNATIONAL UNION CO., LIMITED | Private company limited by shares | Live |
| MAX UNITED TRADING LIMITED | Private company limited by shares | Live |
| UNISON CAPITAL RESOURCES LIMITED | Private company limited by shares | Live |
| ALLIANCE UNION (ASIA) LIMITED | Private company limited by shares | Dissolved |
| UNION CAPITAL INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| MODERN UNITY LIMITED | Private company limited by shares | Dissolved |
| UNION TARGET TECHNOLOGY LIMITED | Private company limited by shares | Live |
| CHINA VENTURE UNION GROUP LIMITED | Private company limited by shares | Live |
| CENTURY UNION INTERNATIONAL BUSINESS LIMITED | Private company limited by shares | Live |
| TIANHE UNION HOLDING GROUP LIMITED | Private company limited by shares | Live |
| UNITED GENES ALL HEALTH GROUP ASIA PACIFIC (UGAP) LIMITED | Private company limited by shares | Dissolved |
| UNION WALTRON (HK) ELECTRONIC TECH LIMITED | Private company limited by shares | Live |
| Universe Gardening Company Limited | Private company limited by shares | Live |