| SINO CHINESE UNION (INTERNATIONAL) LIMITED | Private company limited by shares | Live |
| UNIVERSAL CREATIONS CO., LIMITED | Private company limited by shares | Live |
| Osman Star Universal Company Limited | Private company limited by shares | Live |
| XIANCHI LAITE UNDERWEAR INTERNATIONAL GROUP (FRANCE) CO., LIMITED | Private company limited by shares | Live |
| TALK UNITED LIMITED | Private company limited by shares | Dissolved |
| UneePage Limited | Private company limited by shares | Live |
| UNIC INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNIVERSAL RECYCLING LIMITED | Private company limited by shares | Live |
| UNION GRAND INC LIMITED | Private company limited by shares | Live |
| EASTERN UNITY LIMITED | Private company limited by shares | Live |
| FORTUNE UNITY LIMITED | Private company limited by shares | Dissolved |
| UNION STEP DEVELOPMENT LIMITED | Private company limited by shares | Live |
| Global Transport Underwriting Agency Limited | Private company limited by shares | Dissolved |
| Unique PCB Limited | Private company limited by shares | Live Commenced dormancy on 30-Oct-2015 |
| VOCENT UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL FULL INC LIMITED | Private company limited by shares | Live |
| Universince Limited | Private company limited by shares | Live |
| UNION (HONG KONG) CERTIFICATION SERVICES LIMITED | Private company limited by shares | Live |
| UNIVERSAL BRIGHT LIMITED | Private company limited by shares | Live |
| UNION SERVICES LIMITED | Private company limited by shares | Live |
| HONGKONG I LOVE UNCLE FOOD INDUSTRY LIMITED | Private company limited by shares | Live |
| INTERNATIONAL ROYAL UNION LIMITED | Private company limited by shares | Live |
| GOLDEN UNION INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Live |
| Union Catering and Wine Services Limited | Private company limited by shares | Live |
| UNIVERSE CREATION RICH LIMITED | Private company limited by shares | Live |
| Union Trading Corporation Limited | Private company limited by shares | Live |
| UNIPRO DO HK LIMITED | Private company limited by shares | Live |
| UNION EUK LIMITED | Private company limited by shares | Live |
| GOAL UNION AUTO BODY ENGINEERING LIMITED | Private company limited by shares | Live |
| Pay Universe Solutions Hong Kong Limited | Private company limited by shares | Live |
| UNITED OUTSOURCING CO., LIMITED | Private company limited by shares | Live |
| Unita Management Consultancy Co., Limited | Private company limited by shares | Live |
| HK SPECIAL UNION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Gold Union Group (HK) Limited | Private company limited by shares | Dissolved |
| Universe Richmark Limited | Private company limited by shares | Live |
| KING UNION TRADING LIMITED | Private company limited by shares | Live |
| TREASURE UNION TRADING LIMITED | Private company limited by shares | Live |
| YUMEI UNDERWEAR INDUSTRIAL LIMITED | Private company limited by shares | Live |
| EAST UNION TRADE LIMITED | Private company limited by shares | Live |
| UNION SOURCE ASIA PACIFIC COMPANY LIMITED | Private company limited by shares | Live |
| QUANXING UNDERWEAR LIMITED | Private company limited by shares | Live |
| FUTURE UNION CO., LIMITED | Private company limited by shares | Live |
| LONGBILL UNDERWEAR LIMITED | Private company limited by shares | Live |
| Inner-Beauty Underwear Co., Limited | Private company limited by shares | Live |
| UNIFONE LIMITED | Private company limited by shares | Live |
| UNIQ CREATION LIMITED | Private company limited by shares | Live |
| T&S UNION INVESTMENT CORP LIMITED | Private company limited by shares | Live |
| UNITED GRAPES TRADING LIMITED | Private company limited by shares | Live |
| UNION MATERIAL SERVICE CO., LIMITED | Private company limited by shares | Live |
| NINGBO UNICONM ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| SUCCESS UNIVERSAL TRADING CO. LIMITED | Private company limited by shares | Live |
| United States Maidangna International Domestic Holding Co., Limited | Private company limited by shares | Live |
| World Martial Arts Union Limited | Private company limited by shares | Live |
| GRAND UNION INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| Universal Capital & Investment Limited | Private company limited by shares | Live |
| UNITED EYE CENTRE LIMITED | Private company limited by shares | Live |
| OCEAN UNITY LIMITED | Private company limited by shares | Live |
| WEALTHY UNION ENGINEERING LIMITED | Private company limited by shares | Live |
| Man United Limited | Private company limited by shares | Live |
| UNION GROUP ASIA LIMITED | Private company limited by shares | Live |
| UNION PROJECT MANAGEMENT LIMITED | Private company limited by shares | Live |
| TOP UNIVERSE LIMITED | Private company limited by shares | Live |
| UNIVERSE CORPORATE CONSULTING LIMITED | Private company limited by shares | Live |
| UNICORP SYSTEMS LIMITED | Private company limited by shares | Live |
| FIRST UNION TOURISM INVESTMENT LIMITED | Private company limited by shares | Live |
| Unity Fashion Co., Limited | Private company limited by shares | Live |
| TARGET UNION (ON TOP) TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HK UNIK CLOTHING CO., LIMITED | Private company limited by shares | Dissolved |
| CENTRAL UNIVERSAL (HONG KONG) LIMITED | Private company limited by shares | Live |
| United States Yong Sheng International Investment Management Limited | Private company limited by shares | Live |
| OEM UniKwok Model Products Co., Limited | Private company limited by shares | Live |
| UNION GRACE (OVERSEAS) MANAGEMENT LIMITED | Private company limited by shares | Live |
| UNITED REALTY AGENCY LIMITED | Private company limited by shares | Live |
| Hong Kong Union of Employment Agencies Limited | Company limited by guarantee | Live |
| LK UNION HONG KONG LIMITED | Private company limited by shares | Live |
| Universe Financial Communication Limited | Private company limited by shares | Live |
| LUCKY UNITED INVESTMENTS LIMITED | Private company limited by shares | Live |
| GOLD UNITED PROPERTIES LIMITED | Private company limited by shares | Live |
| GOOD UNION PROPERTIES LIMITED | Private company limited by shares | Live |
| RICHWIN UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNITED GAINER (ASIA) LIMITED | Private company limited by shares | Live |
| UNION HONEST ENTERPRISE CO., LIMITED | Private company limited by shares | Live |
| UNITECH MULTIMEDIA LIMITED | Private company limited by shares | Dissolved |
| ALLIANCE UNION TRADING LIMITED | Private company limited by shares | Live |
| LUCKY UNION INC. LIMITED | Private company limited by shares | Live |
| UNION TURBO LIMITED | Private company limited by shares | Live |
| China Unitall Development Co., Limited | Private company limited by shares | Live |
| UNITED SPACE LIMITED | Private company limited by shares | Live |
| CHINA UNION ENERGY INVESTMENT LIMITED | Private company limited by shares | Live |
| GOOD UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Uniontel Communications Limited | Private company limited by shares | Live |
| HongKong Unicat Auto Sales Co., Limited | Private company limited by shares | Live |
| UNIKA LIMITED | Private company limited by shares | Live |
| UNBOUNDED NETWORK CO., LIMITED | Private company limited by shares | Live |
| UNION TIGER LIMITED | Private company limited by shares | Live |
| UNIVERSAL BIOFUELS COMPANY LIMITED | Private company limited by shares | Live |
| SYZYGY UNITED CULTURAL AND ENTERTAINMENT HOLDINGS (HK) LIMITED | Private company limited by shares | Live |
| HONG KONG UNISON ROAD INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Union Power (H.K) Energy Holdings Limited | Private company limited by shares | Live |
| Pacific Union IT Co., Limited | Private company limited by shares | Dissolved |