| National Union Resources Development Co., Limited | Private company limited by shares | Dissolved |
| PREMIER UNION LIMITED | Private company limited by shares | Live |
| MIDWAY UNION LIMITED | Private company limited by shares | Live |
| NEW UNION CAPITAL INVESTMENT LIMITED | Private company limited by shares | Live |
| NEW UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| HONGKONG SUPERIOR UNION ENERGY COMPANY LIMITED | Private company limited by shares | Live |
| TOP UNION INT'L TRADE CO., LIMITED | Private company limited by shares | Live |
| UNION STONE GROUP LIMITED | Private company limited by shares | Live |
| ORIENT UNION TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| UNION SUCCESS BUILDING MATERIALS AND ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| SUPER UNION INDUSTRY CO., LIMITED | Private company limited by shares | Dissolved |
| GREAT GLOBAL UNION LIMITED | Private company limited by shares | Live |
| SKY UNION INVESTMENT AND CONSULTING COMPANY LIMITED | Private company limited by shares | Dissolved |
| POWER UNION TECHLINKS MANUFACTURE (HK) LIMITED | Private company limited by shares | Live |
| NEW UNION CONSULTANTS LIMITED | Private company limited by shares | Live |
| NEW UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| TOP UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| SINO UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION GLOBAL PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| UNION GLORY INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| CHINA UNION PUBLISHING MEDIA GROUP LIMITED | Private company limited by shares | Live |
| China MBA Union Limited | Private company limited by shares | Live |
| UNION STARS LIMITED | Private company limited by shares | Dissolved |
| SHENZHEN YUNGSIN UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION CONCEPT DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION CONCORD INVESTMENTS LIMITED | Private company limited by shares | Live |
| LUCKY UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| Aero Union Investment (HK) Limited | Private company limited by shares | Live |
| World New Chinese Entrepreneur Union Limited | Private company limited by shares | Live |
| PAY UNION E COMMERCE LIMITED | Private company limited by shares | Live |
| WEST UNION MANUFACTURING LIMITED | Private company limited by shares | Live |
| CHINA OVERALL HEALTH PROMOTION UNION LIMITED | Private company limited by shares | Dissolved |
| UNION ASIA PACIFIC LIMITED | Private company limited by shares | Dissolved |
| SKY UNION DEVELOPMENT (HK) LIMITED | Private company limited by shares | Live |
| UNION MASTER CORPORATION LIMITED | Private company limited by shares | Live |
| UNION STARS INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Dissolved |
| TH UNION INTERNATIONAL TRADING (H.K.) COMPANY LIMITED | Private company limited by shares | Live |
| China Union silicon Valley Tech Limited | Private company limited by shares | Live |
| Elite Union International Development Limited | Private company limited by shares | Dissolved |
| UNION INTERNATIONAL GROUP CO., LIMITED | Private company limited by shares | Live |
| UNION WTZ LIMITED | Private company limited by shares | Live |
| TECK UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| HONG KONG EURO-ASIA UNION INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| HK UNION PRINTING TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| UNION LAND LIMITED | Private company limited by shares | Live |
| CITY UNION (CHINA) HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| NEW ENERGY UNION GROUP HOLDING CO., LIMITED | Private company limited by shares | Live |
| NEW UNION INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Live |
| AC UNION INDUSTRIAL AND TRADING CO., LIMITED | Private company limited by shares | Dissolved |
| UNION FIRST (H.K.) LIMITED | Private company limited by shares | Live |
| World Union Group Limited | Private company limited by shares | Live |
| HK VINO PHOTOGRAPH UNION LIMITED | Private company limited by shares | Live |
| BEST UNION INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION SKY TRADING LIMITED | Private company limited by shares | Dissolved |
| SOURCE UNION INTERNATIONAL TRADE CO., LIMITED | Private company limited by shares | Live |
| Eupple Lighting Union Limited | Private company limited by shares | Live |
| UNION GALAXY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ANGEL UNION (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| UNION PROSPECT CORPORATION LIMITED | Private company limited by shares | Live |
| HONGKONG UNION HOLDINGS INDUSTRIAL LIMITED | Private company limited by shares | Live |
| COMERCIO UNION INNOVADOR IMPORTEXPORT LIMITED | Private company limited by shares | Dissolved |
| HONGKONG UNION WIN INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| PINGHU UNITED UNION HK LIMITED | Company limited by guarantee | Live |
| Common Union Management Limited | Private company limited by shares | Live |
| MEGA UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| EASTERN UNION ENTERPRISE CORP LIMITED | Private company limited by shares | Live |
| OUTSTANDING UNION LIMITED | Private company limited by shares | Live |
| UNION TENDA HK LIMITED | Private company limited by shares | Live |
| SINO UNION TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION CHOICE PROPERTIES LIMITED | Private company limited by shares | Live |
| International President and General Secretary Union Limited | Private company limited by shares | Dissolved |
| KIND UNION LIMITED | Private company limited by shares | Live |
| METRO UNION CONSULTANTS LIMITED | Private company limited by shares | Live |
| MASTER UNION CORPORATION LIMITED | Private company limited by shares | Live |
| AKERS INTERNATIONAL UNION FOOD (ASIA) LIMITED | Private company limited by shares | Dissolved |
| CHAVIS UNION INDUSTRY (H.K) CO., LIMITED | Private company limited by shares | Live |
| KH UNION (HONG KONG) LIMITED | Private company limited by shares | Live |
| SEA UNION (GRG) CONTRACTING LIMITED | Private company limited by shares | Live |
| OCEAN UNION (HK) HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| JIANGXI UNION MINING (HK) CO., LIMITED | Private company limited by shares | Live |
| NICE UNION (HONG KONG) LIMITED | Private company limited by shares | Live |
| ASIA INTERNATIONAL EXHIBITION UNION CO., LIMITED | Private company limited by shares | Live |
| Great Union Human Capital Limited | Private company limited by shares | Live |
| Union World Trading Co., Limited | Private company limited by shares | Dissolved |
| UNION JADE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION SCORPIO CO., LIMITED | Private company limited by shares | Live |
| UNION D'EXPERTS HONG KONG & SHENZHEN COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION LUCK INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Live |
| BROAD UNION INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Live |
| UNION RICH INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION SKY ASIA LIMITED | Private company limited by shares | Live |
| NORTH UNION HOLDING (HK) GROUP LIMITED | Private company limited by shares | Live |
| OCEAN UNION INDUSTRIES LIMITED | Private company limited by shares | Live |
| INVESTMENTS UNION LIMITED | Private company limited by shares | Live |
| SILVER UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| Union of Catholic Training Networks Pty Limited | Private company limited by shares | Live |
| ASIA UNION (HK) GLOBAL HOLDING LIMITED | Private company limited by shares | Live |
| UNION SUNNY LIMITED | Private company limited by shares | Live |
| STRAIT UNION PAPER (GROUP) CO., LIMITED | Private company limited by shares | Live Commenced dormancy on 14-Oct-2014 |