| HONGKONG UNION VAN COMMUNICATION CO., LIMITED | Private company limited by shares | Dissolved |
| ROAD UNION INVESTMENTS (HK) LIMITED | Private company limited by shares | Dissolved |
| INTERNATIONAL UNION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNION CITY INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNION TALENT INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Union Application Limited | Private company limited by shares | Live |
| UNION PHARMACEUTICAL R&D CO. LIMITED | Private company limited by shares | Live |
| UNION BROTHER INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| EASTERN UNION INTERNATIONAL GROUP LIMITED | Private company limited by shares | Dissolved |
| MORE UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION ASIA GROUP ENTERPRISE LIMITED | Private company limited by shares | Live |
| TOP UNION CREATION LIMITED | Private company limited by shares | Dissolved |
| HONGKONG UNION CHANCE LIMITED | Private company limited by shares | Dissolved |
| HONGKONG UNION CHAMP LIMITED | Private company limited by shares | Dissolved |
| UNION METALS AND CHEMICALS LIMITED | Private company limited by shares | Dissolved |
| SUN UNION TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| CHINA CHEKIANG & COMMERCE UNION GROUP LIMITED | Private company limited by shares | Live |
| MEGA UNION INVESTMENT DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| EASY UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| HK UNION AIR TELECOMUNICATION LIMITED | Private company limited by shares | Dissolved |
| PEACE UNION LIMITED | Private company limited by shares | Live |
| KAZAKHSTAN UNION CHEMICAL INDUSTRY GROUP LIMITED | Private company limited by shares | Dissolved |
| UNIONSTAR GIFT MANUFACTURE LIMITED | Private company limited by shares | Live |
| WELL UNION CAPITAL LIMITED | Private company limited by shares | Live |
| UNION TRADER LIMITED | Private company limited by shares | Live |
| GOOD UNION ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| Union Marine Supply Co., Limited | Private company limited by shares | Live |
| UNION PROFITS CHINA LIMITED | Private company limited by shares | Dissolved |
| UNION BRILLIANT GROUP CO., LIMITED | Private company limited by shares | Live |
| VIP Union Limited | Private company limited by shares | Live |
| UNION PHARMA CO., LIMITED | Private company limited by shares | Live |
| UNION MAX TRADING (HK) LIMITED | Private company limited by shares | Live |
| UNION RICHEST INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION POWER HIGH-TECH CO., LIMITED | Private company limited by shares | Dissolved |
| UNIONZ LIMITED | Private company limited by shares | Live |
| WIN UNION GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION TRAED (HONGKONG) LIMITED | Private company limited by shares | Dissolved |
| OCEAN UNION FAR EAST LIMITED | Private company limited by shares | Dissolved |
| UNION VISION LIMITED | Private company limited by shares | Live |
| UNION FOCUS LIMITED | Private company limited by shares | Live |
| SUN UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION RISING (GROUP) TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION MEDICAL INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| SINO UNION INTERNATIONAL CREATION LIMITED | Private company limited by shares | Live Commenced dormancy on 12-Apr-2012 |
| FRIEND UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| MEDIA UNION LIMITED | Private company limited by shares | Live |
| UNION KUDOS COMPANY LIMITED | Private company limited by shares | Live |
| UNION TOP CONSULTANTS LIMITED | Private company limited by shares | Live |
| UNION WORLD HONG KONG GROUP LIMITED | Private company limited by shares | Dissolved |
| SINO UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION LEADER INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| TRI UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| CHINESE EDUCATION TRAINING UNION LIMITED | Private company limited by shares | Dissolved |
| ALPHA UNION LIMITED | Private company limited by shares | Dissolved |
| SKYTECH UNION LIMITED | Private company limited by shares | Dissolved |
| HONGKONG WELL UNION LIMITED | Private company limited by shares | Dissolved |
| UNION APPAREL LIMITED | Private company limited by shares | Live |
| HONGKONG CHEER UNION LIMITED | Private company limited by shares | Dissolved |
| WORLD ENTERPRISER UNION LIMITED | Private company limited by shares | Dissolved |
| UNION CHAMPION APAC LIMITED | Private company limited by shares | Dissolved |
| UNION PACIFIC SHIPPING LIMITED | Private company limited by shares | Live |
| CHINA SUPPLIERS ENTERPRISE UNION LIMITED | Private company limited by shares | Dissolved |
| UNION FAITH ENTERPRISE GROUP HOLDING LIMITED | Private company limited by shares | Dissolved |
| TEAM UNION TECH DEVELOPMENT CO., LIMITED | Private company limited by shares | Dissolved |
| ZHONGRI UNION KITCHEN WARE (CHINA) LIMITED | Private company limited by shares | Dissolved |
| Union International Asset Management Limited | Private company limited by shares | Dissolved |
| UNION RICHEST INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION MAX LIMITED | Private company limited by shares | Dissolved |
| JOY UNION LIMITED | Private company limited by shares | Dissolved |
| Ark Union Production Limited | Private company limited by shares | Dissolved |
| USA JIAJI UNION INT'L CHEMICAL INDUSTRY HOLDING LIMITED | Private company limited by shares | Dissolved |
| SUNNY UNION INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| UNION LUCKY (H.K.) LIMITED | Private company limited by shares | Live |
| UNION OF CATHOLIC ASIAN NEWS LIMITED | Private company limited by shares | Live |
| UNION PROJECT LIMITED | Private company limited by shares | Live |
| ARABIAN UNION TRADING CO., LIMITED | Private company limited by shares | Live |
| UNION POWER INC. LIMITED | Private company limited by shares | Live |
| Great Union Biotech (Hong Kong) Company Limited | Private company limited by shares | Live |
| VICTOR UNION LIMITED | Private company limited by shares | Live |
| TRUMP UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION ASIA SOURCING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION WAY WORLDWIDE LIMITED | Private company limited by shares | Live |
| China Union Import & Export Limited | Private company limited by shares | Live |
| HONEST UNION & PARTNERS LIMITED | Private company limited by shares | Live |
| RAINBOW UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| LINK UNION ASIA GROUP LIMITED | Private company limited by shares | Dissolved |
| OCEAN UNION MANAGEMENT LIMITED | Private company limited by shares | Live |
| UNION4WORKSHOP LIMITED | Private company limited by shares | Dissolved |
| UNION ALPHA LIMITED | Private company limited by shares | Live |
| WAID UNION CO. LIMITED | Private company limited by shares | Live |
| UNION KIND INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| ART UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| SUPREME UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| China Union Building Materials (HK) Company Limited | Private company limited by shares | Dissolved |
| UNION WORLD CAPITAL RESOURCES LIMITED | Private company limited by shares | Dissolved |
| SOUTH UNION ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| DRAGON UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| HONG KONG UNION ASSOCIATION COMPANY LIMITED | Private company limited by shares | Live Commenced dormancy on 19-Feb-2016 |
| UNION HARVEST MARITIME COMPANY LIMITED | Private company limited by shares | Dissolved |
| GOOD UNION HOLDINGS LIMITED | Private company limited by shares | Live |