| Hunghom Union Property Agency Limited | Private company limited by shares | Live |
| UNIVERSAL LIFTS ENGINEERING LIMITED | Private company limited by shares | Live |
| UNION SOURCE CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Group Union Environment Limited | Private company limited by shares | Live |
| UNIQUE (HK)TRADING LIMITED | Private company limited by shares | Live |
| ON UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED PACIFIC INVESTMENT LIMITED | Private company limited by shares | Live |
| Sinoasia United Holding Co., Limited | Private company limited by shares | Live |
| R&J Union Trading Co., Limited | Private company limited by shares | Live |
| Grand Union Investment Hong Kong Limited | Private company limited by shares | Live |
| Global Union Corporation Limited | Private company limited by shares | Live |
| UNION EAST LIMITED | Private company limited by shares | Live |
| International Light Volleyball Union Limited | Private company limited by shares | Live |
| TOP UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| Fame Union International Holding Limited | Private company limited by shares | Live |
| UNIVERSE OCEAN TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| CHINA UNION SEALAND GROUP LIMITED | Private company limited by shares | Live |
| THiNK UNIVERSE Co., Limited | Private company limited by shares | Live |
| SOURCE UNION TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| LENGTH UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED PROFESSIONAL TO HELP IMPROVING THE NEXT GENERATION ASSOCIATION LIMITED | Company limited by guarantee | Live |
| WINBEST UNIVERSAL LIMITED | Private company limited by shares | Live |
| United Cable Company Limited | Private company limited by shares | Live |
| UNIVERSAL PROPERTY ENTERPRISES LIMITED | Private company limited by shares | Live |
| SKY UNIVERSE TRADING LIMITED | Private company limited by shares | Live |
| Southern Union International Limited | Private company limited by shares | Live |
| WORLD SPORTS UNION LIMITED | Private company limited by shares | Live |
| United South Pacific (Fujian) Trading Co. Limited | Private company limited by shares | Live |
| Union Oriental Trading Co., Limited | Private company limited by shares | Live |
| Hong Kong Teachers Union Limited | Private company limited by shares | Live |
| Union Innovation Investment Limited | Private company limited by shares | Live |
| DEKO UNION (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| UNION AUSSIE TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| UNIGEMILANG SUPPLY COMPANY LIMITED | Private company limited by shares | Live |
| E.M UNION TRADING LIMITED | Private company limited by shares | Live |
| United Healthcare Group Limited | Private company limited by shares | Live |
| UNIONPLASTIC LIMITED | Private company limited by shares | Live |
| UNION ACCORD LIMITED | Private company limited by shares | Live |
| China Overseas Union Resources Group Limited | Private company limited by shares | Live |
| LEADER UNION LIMITED | Private company limited by shares | Live |
| UNION MERCHANT TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| UNION TOPRICH TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| EASTERN UNIVERSAL GROUP LIMITED | Private company limited by shares | Live |
| LIGHT UNION TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| BIO UNION HK LIMITED | Private company limited by shares | Live |
| UniSite Holdings Limited | Private company limited by shares | Live |
| Unikinfo International Limited | Private company limited by shares | Live |
| united works group Limited | Private company limited by shares | Live |
| Universal Investment Capital Limited | Private company limited by shares | Live |
| JK UNIVERSAL LIMITED | Private company limited by shares | Live |
| Unichem Group Limited | Private company limited by shares | Live |
| INTERNATIONAL UNION (HK) LIMITED | Private company limited by shares | Live |
| Union Catering Group (HK) Limited | Private company limited by shares | Live |
| Universe Energy Technologies Limited | Private company limited by shares | Live |
| UNION CHUN TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| UNITED SMART INVESTMENT LIMITED | Private company limited by shares | Live |
| OVERSEA UNITED LIMITED | Private company limited by shares | Live |
| UNIVERSAL FRUIT WINE MAGAZINE LIMITED | Private company limited by shares | Live |
| UNITEK ENTERPRISE LIMITED | Private company limited by shares | Live |
| UNIGROUP CHINA LIMITED | Private company limited by shares | Live |
| GENIUS UNION LIMITED | Private company limited by shares | Live |
| Unity CPA Limited | Private company limited by shares | Live |
| HK UNION BEAUTY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Remarkable Universal Network (Hong Kong) Limited | Private company limited by shares | Live |
| ONE UNION TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| UNION ONE TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| UNION TREASURE TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| UNION YING TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| WEALTH UNION HONG KONG TRADING LIMITED | Private company limited by shares | Live |
| ROYAL UNITED LIMITED | Private company limited by shares | Live |
| Hong Kong Universe Sports & Art Limited | Private company limited by shares | Live |
| UNION SHING TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| Uniongain Electronics Industry Co., Limited | Private company limited by shares | Live |
| Unizon Limited | Private company limited by shares | Live |
| UNION HILL LIMITED | Private company limited by shares | Live |
| VISION UNION LIMITED | Private company limited by shares | Live |
| ACTV UNION LIMITED | Private company limited by shares | Live |
| UNION FOOD INDUSTRY GROUP CO., LIMITED | Private company limited by shares | Live |
| Union Hash Limited | Private company limited by shares | Live |
| Union Global Trading Group Limited | Private company limited by shares | Live |
| UNION ALPHA LIMITED | Private company limited by shares | Live |
| UNIMINT CO., LIMITED | Private company limited by shares | Live |
| Eastern Union Trading Co., Limited | Private company limited by shares | Live |
| HK Univapo Technology Limited | Private company limited by shares | Live |
| UNIVERSAL INFOTEK LIMITED | Private company limited by shares | Live |
| LUCK UNION IMPORT & EXPORT COMPANY LIMITED | Private company limited by shares | Live |
| UNION SEE TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| Oceanic Union (Hong Kong) Limited | Private company limited by shares | Live |
| UNIVERSAL INDUSTRY AND TRADE CO., LIMITED | Private company limited by shares | Live |
| UNION IMAGING AND HEALTHCHECK LIMITED | Private company limited by shares | Live |
| Unite Limited | Private company limited by shares | Live |
| HUGE UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| PARK UNIVERSE TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| UNIQUETIME INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| Digital Economy and Universe Civilization Co., Limited | Private company limited by shares | Live |
| TSING HOO ATHLETIC SPORT UNITED RESPONSIBILITY CO., LIMITED | Private company limited by shares | Live |
| UNION PRINTING & PACKING (HONG KONG) LIMITED | Private company limited by shares | Live |
| JONLY UNITED TECHNOLOGY LIMITED | Private company limited by shares | Live |
| CRBC European Union Investment Limited | Private company limited by shares | Live |
| Union Group Investment Holdings Limited | Private company limited by shares | Live |