| UNITED OCEAN INVESTMENT LIMITED | Private company limited by shares | Live |
| U P I UNITED PACIFIC INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED PACIFIC INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED PACIFIC INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED POINT INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED POWER INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED POWER INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED PROSPEROUS INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED RANK INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| United Renewable Investment Limited | | Live |
| UNITED RICH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED RICH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED RICH INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED RICH CAPITAL INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED SHEEN INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED SMART INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SMART UNITED INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED SMART INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED SMART CAPITAL INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED SMART CAPITAL INVESTMENT LIMITED | Private company limited by shares | Live |
| United Standard Investment Limited | | Live |
| UNITED SUCCESS INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED SUCCESS CAPITAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED SUCCESS CAPITAL INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED TEAM INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED TEAM INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED TIME INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED TRADE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| TRADE UNITED INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| United Truth Investment Limited | Private company limited by shares | Dissolved |
| UNITED VALUE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| VAST UNITED INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED VENTURE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED VICTOR INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED VISION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED WEALTHY INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED WISDOM INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED ZONE INVESTMENT LIMITED | Private company limited by shares | Live |
| United Zone Investment Holding Company Limited | Private company limited by shares | Live |
| WIN UNITED INVESTMENTS LIMITED | Private company limited by shares | Live |
| TOP UNITED INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| GO UNITED INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED ART INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED INVESTMENTS LIMITED | Private company limited by shares | Live |
| MEN UNITED INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED MAX INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| NEW UNITED INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED SKY INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| TOP UNITED INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED HLS INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| JOY UNITED INVESTMENTS LIMITED | Private company limited by shares | Live |
| K UNITED INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| NEW UNITED INVESTMENTS LIMITED | Private company limited by shares | Live |
| TOP UNITED INVESTMENTS LIMITED | Private company limited by shares | Live |
| SKY UNITED INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNITED SEA INVESTMENTS LIMITED | Private company limited by shares | Live |
| ASIA UNITED INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED BASE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED BASE INVESTMENTS LIMITED | Private company limited by shares | Live |
| BEST UNITED INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| United Business & Investments Limited | Private company limited by shares | Live |
| United Capital Investments HK Company Limited | Private company limited by shares | Live |
| UNITED CENTRE INVESTMENTS LIMITED | Private company limited by shares | Live |
| Cleantech United Investments HK Limited | Private company limited by shares | Dissolved |
| UNITED CONCORD INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED CONCORD INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED DRAGON INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNITED FAIR INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| FIRST UNITED INVESTMENTS LIMITED | Private company limited by shares | Live |
| GOLD UNITED INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| GOLD UNITED INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| GRAND UNITED INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED HOPE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED LAND INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNITED NATION INVESTMENTS LIMITED | Private company limited by shares | Live |
| NICE UNITED INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED OCEAN INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| OCEAN UNITED INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNITED OCEAN INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED OCEAN INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED PACIFIC INVESTMENTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNITED INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED PACIFIC INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNITED INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNITED INVESTMENTS PACIFIC LIMITED | Private company limited by shares | Live |
| POLY UNITED INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED POWER INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED POWER INVESTMENTS LIMITED | Private company limited by shares | Live |
| RICH UNITED INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNITED SENSE INVESTMENTS LIMITED | Private company limited by shares | Live |
| SHEEN UNITED INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| SOUTH UNITED INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED TEAM INVESTMENTS LIMITED | Private company limited by shares | Live |
| Triple United Investments Limited | Private company limited by shares | Live |
| VAST UNITED INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED VIEW INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITED VISION INVESTMENTS LIMITED | Private company limited by shares | Live |
| Zobon United Investments Limited | Private company limited by shares | Live |
| GENERAL UNITED INVESTORS LIMITED | Private company limited by shares | Dissolved |
| Italy United Limited | Private company limited by shares | Live |