| Ultrastar HQ Limited | | Live |
| ULTRA-STEADY LIMITED | Private company limited by shares | Dissolved |
| ULTRA-STRONG LIMITED | Private company limited by shares | Dissolved |
| ULTRASUPREME LIMITED | Private company limited by shares | Live |
| ULTRASYS COMPANY LIMITED | Private company limited by shares | Dissolved |
| ULTRASYS.COM LIMITED | Private company limited by shares | Dissolved |
| ULTRATAB ASIA LIMITED | Private company limited by shares | Live |
| ULTRATE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ULTRATE INVESTMENTS LIMITED | Private company limited by shares | Live |
| ULTRATEAM (HOLDINGS) LIMITED | Private company limited by shares | Dissolved |
| NEW ULTRATECH COMPANY LIMITED | Private company limited by shares | Live |
| ULTRATECH ASIA LIMITED | Private company limited by shares | Live |
| ULTRATECH GROUP (SHENZHEN) LIMITED | Private company limited by shares | Live |
| PACIFIC ULTRATECH LIMITED | Private company limited by shares | Live |
| Royal Ultratech Limited | Private company limited by shares | Live |
| ULTRATECH PLASTIC TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ULTRATEK LIMITED | Private company limited by shares | Live |
| ULTRATEX LIMITED | Private company limited by shares | Dissolved |
| ULTRATIDE LIMITED | Private company limited by shares | Dissolved |
| ULTRATIME LIMITED | Private company limited by shares | Live |
| ULTRATIME (H.K.) INDUSTRIAL LIMITED | Private company limited by shares | Live |
| FUDU ULTRA-TIME (INTERNATIONAL) LIMITED | Private company limited by shares | Dissolved |
| ULTRATIVE HK CO., LIMITED | Private company limited by shares | Live |
| ULTRATON ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| Ultraunion Commercial Company Limited | Private company limited by shares | Live |
| ULTRAVAGANZA INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| UltraVan HK Limited | Private company limited by shares | Live |
| ULTRAVANTAGE INC. LIMITED | | Live |
| ULTRAVERA COMPANY LIMITED | Private company limited by shares | Live |
| ULTRA-VIEW INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UltraViolet Limited | Private company limited by shares | Live |
| ULTRAVISION LED LIMITED | Private company limited by shares | Dissolved |
| Ultravista Limited | Private company limited by shares | Dissolved |
| ULTRAVOX (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| ULTRAWARD COMPANY LIMITED | Private company limited by shares | Dissolved |
| ULTRAWARE LIMITED | Private company limited by shares | Live |
| ULTRAWAY ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ULTRAWAY INVESTMENTS LIMITED | Private company limited by shares | Live |
| ULTRAWAY PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| ULTRAWELL LIMITED | Private company limited by shares | Live |
| ULTRAWELL ENTERPRISES LIMITED | Private company limited by shares | Live |
| ULTRAWIDE LIMITED | Private company limited by shares | Dissolved |
| ULTRAWISE LIMITED | Private company limited by shares | Dissolved |
| ULTRAWIT COMPANY LIMITED | Private company limited by shares | Dissolved |
| ULTRAWORLD LIMITED | Private company limited by shares | Live |