| UPON LIMITED | Private company limited by shares | Live |
| MAX UPON LIMITED | Private company limited by shares | Live |
| Upon Sky Limited | Private company limited by shares | Live |
| SPEED UPON LIMITED | Private company limited by shares | Live |
| STAR UPON LIMITED | Private company limited by shares | Dissolved |
| UPONCOMM TECHNOLOGIES CO., LIMITED | Private company limited by shares | Live |
| Upone Limited | | Live |
| HONGKONG UP-ONE INTERNATIONAL TRADE CO., LIMITED | Private company limited by shares | Live |
| Uponor Hong Kong Limited | Private company limited by shares | Live |
| UPONTIME ENTERPRISES LIMITED | Private company limited by shares | Live |
| UPONTYNE COMPANY LIMITED | Private company limited by shares | Live |
| UPONWAY GLOBAL LIMITED | | Live |