| UNION GAIN (ASIA) LIMITED | Private company limited by shares | Live |
| UNION METAL (CHINA) BUSINESS LIMITED | Private company limited by shares | Dissolved |
| UNION HARBOUR LIMITED | Private company limited by shares | Live |
| DAILY UNION LIMITED | Private company limited by shares | Dissolved |
| H.K. UNION GIFT CO. LIMITED | Private company limited by shares | Dissolved |
| UNION TOTAL LOGISTICS CO., LIMITED | Private company limited by shares | Dissolved |
| SKY UNION TRADING LIMITED | Private company limited by shares | Live |
| UNIVERSAL UNION LIMITED | Private company limited by shares | Dissolved |
| UNION WORLD LIMITED | Private company limited by shares | Dissolved |
| UNIGAIN CENTURY LIMITED | Private company limited by shares | Live |
| UNITED WAY LIMITED | Private company limited by shares | Dissolved |
| GOLDEN UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| BE Universal Limited | Private company limited by shares | Live |
| UNION WEALTHY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION COMPANY LIMITED | Private company limited by shares | Live |
| UNION DRAGON HOLDINGS LIMITED | Private company limited by shares | Live |
| UNIFORMZONE LIMITED | Private company limited by shares | Dissolved |
| UNION STAR (O/A) LIMITED | Private company limited by shares | Live |
| UNION WELL INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| MODERN STAR UNIVERSAL LIMITED | Private company limited by shares | Live |
| MAX UNION COMPANY LIMITED | Private company limited by shares | Live |
| UNICONCEPT ASIA LIMITED | Private company limited by shares | Live |
| UNICOLOR PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| UNIFASHION TRADING COMPANY LIMITED | Private company limited by shares | Live |
| UNITED ATLANTIC LIMITED | Private company limited by shares | Live |
| UNIOPTICAL LIMITED | Private company limited by shares | Live |
| SINO-US JIANWEN UNIVERSITY LIMITED | Private company limited by shares | Dissolved |
| KING UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION HOLDINGS GROUP LIMITED | Private company limited by shares | Live |
| UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION CHINA HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION WAY INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNIVERSITY SPOT COMPANY LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| UNION TECH ELECTRONICS LIMITED | Private company limited by shares | Live |
| UNIGROUP TECHNOLOGY LIMITED | Private company limited by shares | Live |
| REGENT UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNION SHINE DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION FIRST TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| UNITED RESOURCES ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| ETERNAL UNION INTERNATIONAL SHIPPING COMPANY LIMITED | Private company limited by shares | Live |
| WASONIC UNITED LIMITED | Private company limited by shares | Dissolved |
| UNION WELL INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION FIRST DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| HK UNION LIHUA INT'L INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION DRAGON INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNIQUE KIDS LIMITED | Private company limited by shares | Live |
| UNITED ELECTRONIC COMPONENTS LIMITED | Private company limited by shares | Dissolved |
| UNION TECH E&M COMPANY LIMITED | Private company limited by shares | Live |
| UNIVERSAL TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| U.S.A. UNICOM ELECTRIC CO., LIMITED | Private company limited by shares | Dissolved |
| PAN ASIA UNITED LIMITED | Private company limited by shares | Dissolved |
| UNION (CHINA) PURCHASING CO., LIMITED | Private company limited by shares | Dissolved |
| UNILANE PETROLEUM LIMITED | Private company limited by shares | Live |
| UNI-GLOBAL (HONG KONG) LIMITED | Private company limited by shares | Live |
| AN SOON UNITY LIMITED | Private company limited by shares | Live |
| UNISON (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| ROYAL UNIVERSAL LIMITED | Private company limited by shares | Live |
| SUNWAY UNION LOGISTICS LIMITED | Private company limited by shares | Dissolved |
| UNIGREAT LIMITED | Private company limited by shares | Live |
| UNION LAND DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION MANUFACTURING & CO., LIMITED | Private company limited by shares | Dissolved |
| UNION WORLD ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| CHINA UNIQUE INVESTMENTS LIMITED | Private company limited by shares | Live |
| HONGKONG UNION ARCHITECTURE INSTITUTE LIMITED | Private company limited by shares | Live |
| UNISON HOPE CHARITABLE FOUNDATION LIMITED | Company limited by guarantee | Live |
| STAR UNIVERSE CORPORATION LIMITED | Private company limited by shares | Live |
| UNISON GROUP HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| HARVEST UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| CHINA INDUSTRIAL INTEGRITY UNION CORPORATION LIMITED | Private company limited by shares | Live |
| UNIMATRIX ASIA LIMITED | Private company limited by shares | Live |
| UNIVERSAL NET TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION CITY LIMITED | Private company limited by shares | Dissolved |
| UNION MFG GROUP LIMITED | Private company limited by shares | Dissolved |
| UNIX LIMITED | Private company limited by shares | Live |
| UNION BIO-CHEM PHARMACEUTICAL LIMITED | Private company limited by shares | Dissolved |
| GOLDEN UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION CHEER LIMITED | Private company limited by shares | Dissolved |
| UNION LOGISTICS INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Live |
| UNION PROFIT LOGISTICS SERVICES LIMITED | Private company limited by shares | Live |
| UNION LAND (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| TECHNIC STAR UNIVERSAL LIMITED | Private company limited by shares | Live |
| BEST UNIVERSAL PRODUCTS LIMITED | Private company limited by shares | Live |
| UNITED CENTURY INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED FINANCE AND INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED ENGLISH PUBLISHING LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL HUIFENG ELECTRONIC LIMITED | Private company limited by shares | Dissolved |
| UNION FASHIONS HONG KONG LIMITED | Private company limited by shares | Dissolved |
| UNION TARGET TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| UNION GARMENT FACTORY LIMITED | Private company limited by shares | Dissolved |
| UNIHANS SHIPPING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNICON INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| UNIVERSAL ELECTRICAL COMPANY LIMITED | Private company limited by shares | Live |
| UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNIKITAS & CO., LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL EXPORTS TRADE LIMITED | Private company limited by shares | Live |
| UNI-PROFIT LIMITED | Private company limited by shares | Dissolved |
| UNION FORCE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION COMMUNITY LIMITED | Private company limited by shares | Dissolved |
| UNITED SOUTHERN COMPANY LIMITED | Private company limited by shares | Dissolved |