| Union Sky Sourcing Corporation Limited | Private company limited by shares | Live |
| MILABB BAO SHENG UNITED CO., LIMITED | Private company limited by shares | Live |
| UNIQUE BELLA LIMITED | Private company limited by shares | Dissolved |
| UNION SHINY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNIVERSE INTERNATIONAL (HOLDING) COMPANY LIMITED | Private company limited by shares | Live |
| China Business Association Union Limited | Private company limited by shares | Live |
| Fortune Union Develop Limited | Private company limited by shares | Live |
| UNION GLORY ASSET MANAGEMENT (HK) LIMITED | Private company limited by shares | Live |
| CHEER UNION CORPORATION LIMITED | Private company limited by shares | Live |
| Unity Industry Limited | Private company limited by shares | Live |
| Jack Jordan Universal Limited | Private company limited by shares | Live |
| Unilumin Energy Technology Limited | Private company limited by shares | Live |
| Uni-Valve Co. Limited | Private company limited by shares | Live |
| Union Gain Electronics Co., Limited | Private company limited by shares | Live |
| CHANGJIANG UNION INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| UNITED AS ONE CO., LIMITED | Private company limited by shares | Live |
| UNION TOP CREATION (HK) CO., LIMITED | Private company limited by shares | Live |
| Unique Infrastructure HK Limited | Private company limited by shares | Live |
| Unichem Co., Limited | Private company limited by shares | Live |
| EAGLE UNION CORPORATION LIMITED | Private company limited by shares | Live |
| NATION UNION LIMITED | Private company limited by shares | Live |
| RICHGATE UNIVERSAL LIMITED | Private company limited by shares | Live |
| Union Optech (HK) Co., Limited | Private company limited by shares | Live |
| UNITEDGREEN LIMITED | Private company limited by shares | Dissolved |
| Unity of Hong Kong SME Limited | Company limited by guarantee | Live |
| Golden Union Agrochemical (H.K.) Co., Limited | Private company limited by shares | Live |
| UNITED PROJECTS & SERVICE LIMITED | Private company limited by shares | Live |
| ZAN MEN JIA BUSINESS UNION LIMITED | Private company limited by shares | Dissolved |
| UNION DRAGON (HONG KONG) LIMITED | Private company limited by shares | Live |
| UNION CREATE INDUSTRIAL LIMITED | Private company limited by shares | Live |
| PACIFIC UNITED BEVERAGE LIMITED | Private company limited by shares | Live |
| GREAT UNION INDUSTRY LIMITED | Private company limited by shares | Live |
| Uni-Pro Wealth Management Company Limited | Private company limited by shares | Live |
| MFT UNIVERSAL LIMITED | Private company limited by shares | Live |
| Uniclub Hosting HK Limited | Private company limited by shares | Dissolved |
| UNITEAM OFFSHORE LIMITED | Private company limited by shares | Live |
| UNION ACCORD LIMITED | Private company limited by shares | Live |
| Universe Dynamics Technology Co., Limited | Private company limited by shares | Dissolved |
| UNION FIRST ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNITED WORLD CHINA ZHOUSHAN INVESTMENT GROUP LIMITED | Private company limited by shares | Live |
| UNION SEA SHIPPING COMPANY LIMITED | Private company limited by shares | Dissolved |
| PLY UNION LIMITED | Private company limited by shares | Live |
| OCEAN UNION INTERNATIONAL TRADING HK LIMITED | Private company limited by shares | Live |
| LIANYUNGANG UNION INTERNATIONAL FREIGHT CO., LIMITED | Private company limited by shares | Live |
| Uniteek Limited | Private company limited by shares | Live |
| HK XINGYUAN UNION LIMITED | Private company limited by shares | Live |
| UNISPEEDY TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| HK GLORY UNION MEDICAL TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| HAPPINESS UNION GROUP LIMITED | Private company limited by shares | Live |
| LONG UNITED TRADING LIMITED | Private company limited by shares | Live |
| ABLE UNION CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Live |
| BARUS UNITED CO., LIMITED | Private company limited by shares | Live |
| Universal Chief Company Limited | Private company limited by shares | Live |
| NEW UNITED INC. LIMITED | Private company limited by shares | Live |
| OCEAN UNION INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| HONG KONG UNIVERSE DREAM TRADING LIMITED | Private company limited by shares | Live |
| Unite Enterprise Company Limited | Private company limited by shares | Live |
| UNITED HILL CHINA LIMITED | Private company limited by shares | Live |
| UNICOST CO., LIMITED | Private company limited by shares | Live |
| China Internet Finance Union Limited | Private company limited by shares | Live |
| UNIVERSAL TRADING HK LIMITED | Private company limited by shares | Live |
| GENIUS UNION LIMITED | Private company limited by shares | Live |
| GREATER UNION GROUP CO LIMITED | Private company limited by shares | Live |
| UNION ACE INC LIMITED | Private company limited by shares | Live |
| HK Wanshang Union Holding Group Limited | Private company limited by shares | Live |
| CHINA ASIA UNION INVESTMENT GROUP LIMITED | Private company limited by shares | Live |
| Union Air Service Limited | Private company limited by shares | Live |
| CREATOR UNIVERSAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HONEST UNION PHARMACEUTICAL CO., LIMITED | Private company limited by shares | Live |
| UNION GAIN INTERNATIONAL HOLDING CO., LIMITED | Private company limited by shares | Live |
| Universal Private Payment System Limited | Private company limited by shares | Live |
| INTERNATIONAL CHILDREN'S CULTURAL INDUSTRIAL UNION LIMITED | Private company limited by shares | Dissolved |
| Unigel Limited | Private company limited by shares | Live |
| Chinese region United Group (Hongkong) Co., Limited | Private company limited by shares | Live |
| CHINA WINE UNITED INTERNATIONAL HOLDINGS GROUP LIMITED | Private company limited by shares | Live |
| WORLD CHINESE ENTREPRENEURS UNION LIMITED | Private company limited by shares | Live |
| Universal Alliance Group Limited | Private company limited by shares | Live |
| Tanzanian Trade and Industrial Union Limited | Private company limited by shares | Live |
| China Workers And Peasants International United Investment Group Co., Limited | Private company limited by shares | Live |
| UNIWAY INTERNATIONAL ENTERPRISE LIMITED | Private company limited by shares | Live |
| UNIVERSAL CREATIVE HOLDING CO., LIMITED | Private company limited by shares | Live |
| HEART UNION LOGISTICS LIMITED | Private company limited by shares | Live |
| CHINA NEW 3 BOARD LISTED UNION LIMITED | Private company limited by shares | Live |
| UNITED PYRAMID TRADES LIMITED | Private company limited by shares | Live |
| Universal Concern Asia Limited | Private company limited by shares | Live |
| HONG KONG UNION ART PROPAGATION CO. LIMITED | Private company limited by shares | Live |
| FINE UNION INC LIMITED | Private company limited by shares | Live |
| UNION BAY ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNION FAITH LOGISTICS LIMITED | Private company limited by shares | Live |
| UNION LINKER INVESTMENT LIMITED | Private company limited by shares | Live |
| SUCCESS UNITY LIMITED | Private company limited by shares | Live |
| RICH UNITED INC LIMITED | Private company limited by shares | Live |
| UNITED JERSEY LIMITED | Private company limited by shares | Live |
| Unielec Co., Limited | Private company limited by shares | Live |
| Imperial University of Peking Limited | Private company limited by shares | Live |
| China United Universal Petroleum & Chemical Co., Limited | Private company limited by shares | Dissolved |
| SUCCESS UNION CORPORATION LIMITED | Private company limited by shares | Live |
| ORIENTAL UNIVERSE (C-HK) LIMITED | Private company limited by shares | Live |
| UNITED POWER INVESTMENT LIMITED | Private company limited by shares | Live |
| UNIHOM LIMITED | Private company limited by shares | Live |