| UNION PROFIT LIMITED | Private company limited by shares | Live |
| SILVER UNION LIMITED | Private company limited by shares | Live |
| UNION MARK INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| SKYTRADE UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ASSOCIATION OF WORLD UNION FUND LIMITED | Private company limited by shares | Live |
| UNION WISDOM INTERNATIONAL INDUSTRIAL LIMITED | Private company limited by shares | Live |
| Hong Kong Union International Trading Limited | Private company limited by shares | Live |
| Intelligence Union (HKG) Consulting Co., Limited | Private company limited by shares | Live |
| WORLD UNION FORTUNE CLUB CO., LIMITED | Private company limited by shares | Live |
| FIRST UNION INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Live |
| GRAND UNION CORPORATION LIMITED | Private company limited by shares | Live |
| EAST ENTERPRISER UNION GROUP LIMITED | Private company limited by shares | Live |
| GLOBAL BRAND AMBASSADOR UNION ASSOCIATION LIMITED | Private company limited by shares | Dissolved |
| UNION FIDELITY INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION RICH INVESTMENT LIMITED | Private company limited by shares | Live |
| VICTORY UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| UNION FIDELITY HOLDINGS LIMITED | Private company limited by shares | Live |
| China Union Iron And Steel Co., Limited | Private company limited by shares | Dissolved |
| UNION WAY CORPORATION LIMITED | Private company limited by shares | Live |
| UNION RISING INTERNATIONAL LIMITED | Private company limited by shares | Live |
| DMOSS (HK) UNION CO., LIMITED | Private company limited by shares | Live |
| Talent Union (Hong Kong) Limited | Private company limited by shares | Live Commenced dormancy on 26-Nov-2013 |
| CHN-LOGISTICS UNION (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| JOINT UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION TREASURE TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION FIDELITY ENGINEERING LIMITED | Private company limited by shares | Live |
| UNION METAL GROUP LIMITED | Private company limited by shares | Live |
| CHINA UNION BUSINESS COLLEGE LIMITED | Private company limited by shares | Dissolved |
| UNION SKY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ASIAN UNION (HONG KONG) LIMITED | Private company limited by shares | Live |
| SINO CONFUCIAN ENTREPRENEURS UNION LIMITED | Private company limited by shares | Live |
| ON PAR UNION LIMITED | Private company limited by shares | Live |
| UNION FINE LIMITED | Private company limited by shares | Live |
| Oriental Union International (Hong Kong) Limited | Private company limited by shares | Live |
| UNION TOYS LIMITED | Private company limited by shares | Live |
| UNION POWER CONSULTANTS LIMITED | Private company limited by shares | Live |
| UNION CONTROL CORPORATION LIMITED | Private company limited by shares | Live |
| NEW UNION LOGISTICS LIMITED | Private company limited by shares | Live |
| ELEVATED UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION WAY EXHIBITION SERVICES LIMITED | Private company limited by shares | Live |
| CHINA UNION INDUSTRY INVESTMENT GROUP LIMITED | Private company limited by shares | Dissolved |
| WELL UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| KENLAND UNION COMPANY LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION TRADING INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Top Union International Investment Holdings Limited | Private company limited by shares | Live |
| SOUTH UNION FOOD COMPANY LIMITED | Private company limited by shares | Live |
| UNION RISER COMPANY LIMITED | Private company limited by shares | Live |
| HONG KONG TONG SAN COMMERCIAL UNION COMPANY LIMITED | Private company limited by shares | Live |
| GLOBAL LOVE CONNECT LOVE UNION LIMITED | Private company limited by shares | Live |
| State Union Assets Management Co., Limited | Private company limited by shares | Live |
| UNION MEGA SHIPPING LIMITED | Private company limited by shares | Live |
| UNION BRAND LIMITED | Private company limited by shares | Live |
| UNION PROSPECT LIMITED | Private company limited by shares | Live |
| UNION MACHINERY CO., LIMITED | Private company limited by shares | Live |
| Union Street Trading Company Limited | Private company limited by shares | Live |
| UNION EMPIRE KNITTING LIMITED | Private company limited by shares | Live |
| EASTERN UNION TRADING SERVICES LIMITED | Private company limited by shares | Live |
| GREEN UNION OPTOELECTRONIC LIMITED | Private company limited by shares | Live |
| UNION INTERNATIONAL LOGISTIC LIMITED | Private company limited by shares | Live |
| Union Energy Technology Co., Limited | Private company limited by shares | Live |
| National Health Industry Union Limited | Private company limited by shares | Live |
| UNION TELCO LIMITED | Private company limited by shares | Live |
| RICH UNION INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION TRADING (H.K.) LIMITED | Private company limited by shares | Live |
| CHINA INNOVATION UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION PACIFIC CONSULTANTS LIMITED | Private company limited by shares | Live |
| CHAMPION UNION (HK) DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION BUSINESS RESOURCES HONG KONG LIMITED | Private company limited by shares | Live |
| TREASURE UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION LUCK CULTURE MEDIA LIMITED | Private company limited by shares | Live |
| SMART UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION TOP INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ASIAN UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| ETERNAL UNION INDUSTRY AND COMMERCE CO., LIMITED | Private company limited by shares | Live |
| UNION DRAGON INVESTMENTS LIMITED | Private company limited by shares | Live |
| Union Trading (Holdings) Limited | Private company limited by shares | Live |
| GIANT UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| BEST UNION GROUP LIMITED | Private company limited by shares | Live |
| Union Farming Limited | Private company limited by shares | Live |
| GLORY UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| SUN UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION SKY CREATION LIMITED | Private company limited by shares | Live |
| New Century Union Holdings Group Limited | Private company limited by shares | Live |
| UNION WISE FOOD AND CATERING GROUP LIMITED | Private company limited by shares | Live |
| GOOD UNION CONSTRUCTION (CHINA) COMPANY LIMITED | Private company limited by shares | Dissolved |
| INTERNATIONAL CREATIVE INDUSTRY UNION LIMITED | Private company limited by shares | Live |
| STAR UNION CORPORATION LIMITED | Private company limited by shares | Live |
| UNION BUSINESS SERVICE COMPANY LIMITED | Private company limited by shares | Dissolved |
| KONG UNION MANAGEMENT LIMITED | Private company limited by shares | Live |
| UNION SKY TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| K&M Union (Asia) Company Limited | Private company limited by shares | Live |
| Ever Union Medical Group Limited | Private company limited by shares | Live |
| Ever Union Medical Services Group Limited | Private company limited by shares | Live |
| CREATICH UNION LIMITED | Private company limited by shares | Live |
| TIP TOP UNION LIMITED | Private company limited by shares | Live |
| MOMENTIVE UNION SPECIALTY CHEMICALS LIMITED | Private company limited by shares | Live |
| Global Union Motors Limited | Private company limited by shares | Dissolved |
| Union Dry Goods Limited | Private company limited by shares | Live |
| UNION WORLDWIDE ELECTRONIC TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| INTERNATIONAL UNION OF PHOTOGRAPHERS LIMITED | Private company limited by shares | Live |