| UNION-A WORKSHOP LIMITED | Private company limited by shares | Live |
| UNION SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| FRANKI UNION REMITTANCE LIMITED | Private company limited by shares | Dissolved |
| EVER UNION GARMENT TRADING (HONGKONG) LIMITED | Private company limited by shares | Live |
| UNION PLAZA (SHANGHAI) INVESTMENT LIMITED | Private company limited by shares | Live |
| AFRICA UNION INTERNATIONAL DEVELOPMENT CO., LIMITED | Private company limited by shares | Dissolved |
| UNION NETWORK SHIPPING CO., LIMITED | Private company limited by shares | Live |
| ALL HONG KONG MARCHING BAND UNION LIMITED | Company limited by guarantee | Live |
| UNION BROKER LIMITED | Private company limited by shares | Live |
| GREAT UNION METALWARE MANUFACTURER (HK) LIMITED | Private company limited by shares | Dissolved |
| UNION FASHION GARMENT LIMITED | Private company limited by shares | Dissolved |
| HONG KONG HONG CHAU UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION PLAZA (SHENZHEN) INVESTMENT LIMITED | Private company limited by shares | Live |
| TOP UNION ELECTRIC LIMITED | Private company limited by shares | Dissolved |
| SMART UNION CORPORATE SERVICES LIMITED | Private company limited by shares | Dissolved |
| UNION ENTERPRISES (GROUP) LIMITED | Private company limited by shares | Dissolved |
| UNION PRODUCTS & ENG. CO., LIMITED | Private company limited by shares | Live |
| GLOBE UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION FIELD ENERGY & PETROCHEMICAL LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION LIMITED | Private company limited by shares | Dissolved |
| INTERNATIONAL CLOUD FINANCE UNION GROUP LIMITED | Private company limited by shares | Live |
| EASTERN UNION INTERNATIONAL SHIPPING CO., LIMITED | Private company limited by shares | Live |
| FORTUNE UNION INTERNATIONAL HOLDING LIMITED | Private company limited by shares | Dissolved |
| H.K. UNION EDUCATION LIMITED | Private company limited by shares | Dissolved |
| UNION MILLION CONSTRUCTION LIMITED | Private company limited by shares | Live |
| UNION BILLION LIMITED | Private company limited by shares | Dissolved |
| CHINA INTERNATIONAL UNION INVESTMENT LIMITED | Private company limited by shares | Live Ceased dormancy on 02-Sep-2004 |
| UNION ART PRINTING INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| TUNG'S UNION ENGINEERING LIMITED | Private company limited by shares | Live |
| UNION POWER ENTERPRISE MANAGEMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| CHINA ARTIST UNION GROUP LIMITED | Private company limited by shares | Live |
| ON UNION TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| ON UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SKY UNION (FAR EAST) LIMITED | Private company limited by shares | Live |
| GLOBAL CHINESE UNION PRESS LIMITED | Private company limited by shares | Dissolved |
| CHINA UNIONS LIMITED | Private company limited by shares | Dissolved |
| BEST UNION INTERNATIONAL SHIPPING COMPANY LIMITED | Private company limited by shares | Live |
| UNION RICH PAPER COMPANY LIMITED | Private company limited by shares | Live |
| UNION TRADING TECHNOLOGY (H.K.) CO., LIMITED | Private company limited by shares | Dissolved |
| CROWN UNION INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Live |
| GOOD UNION TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| UNION FIRST MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| UNION FIELD HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION SMART LIMITED | Private company limited by shares | Live |
| GOODHOPE UNION LIMITED | Private company limited by shares | Dissolved |
| FORCE UNION LIMITED | Private company limited by shares | Live |
| HONG KONG HEALTH AND BEAUTY UNION LIMITED | Private company limited by shares | Dissolved |
| LEADER UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION (INTERNATIONAL) COMPUTER LIMITED | Private company limited by shares | Live |
| TOP UNION MOTORS LIMITED | Private company limited by shares | Dissolved |
| UNION OCEAN INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| FORTUNE UNION (HONG KONG) DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| TOP UNION TECHNOLOGY ENTERPRISE CO., LIMITED | Private company limited by shares | Dissolved |
| PERMIUM. UNION INVESTMENT HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION PAYMENT TECHNOLOGY & SERVICES LIMITED | Private company limited by shares | Dissolved |
| UNION GENIUS LIMITED | Private company limited by shares | Dissolved |
| NEW UNION LIMITED | Private company limited by shares | Dissolved |
| UNION MED. (HONGKONG) LIMITED | Private company limited by shares | Live |
| CHINAWAY (UNION) CONSTRUCTION COMPANY LIMITED | Private company limited by shares | Live |
| NEW UNION INTERNATIONAL (CHINA) LIMITED | Private company limited by shares | Dissolved |
| 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 |
| GOLDEN UNION HOLDINGS 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 |
| UNION STAR (O/A) LIMITED | Private company limited by shares | Live |
| UNION WELL INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| MAX UNION COMPANY LIMITED | Private company limited by shares | Live |
| 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 |
| CHINA UNION INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| UNION TECH ELECTRONICS LIMITED | Private company limited by shares | Live |
| UNION SHINE DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION FIRST TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| ETERNAL UNION INTERNATIONAL SHIPPING COMPANY LIMITED | Private company limited by shares | Live |
| 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 |
| UNION TECH E&M COMPANY LIMITED | Private company limited by shares | Live |
| UNION (CHINA) PURCHASING CO., LIMITED | Private company limited by shares | Dissolved |
| SUNWAY UNION LOGISTICS LIMITED | Private company limited by shares | Dissolved |
| 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 |
| HONGKONG UNION ARCHITECTURE INSTITUTE LIMITED | Private company limited by shares | Live |
| HARVEST UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| CHINA INDUSTRIAL INTEGRITY UNION CORPORATION LIMITED | Private company limited by shares | Live |
| UNION CITY LIMITED | Private company limited by shares | Dissolved |