| Company Name | Type | Status |
|---|---|---|
| keyZ Production Limited | Private company limited by shares | Dissolved |
| Keyzero Limited | Live | |
| Keyzify Limited | Live | |
| Keyzone Technology Co., Limited | Private company limited by shares | Live |
| KEYZONE TESTING TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| KEYZONE (HK) LIMITED | Private company limited by shares | Live |
| HONGKONG KEYZONE TECHNOLOGY LIMITED | Private company limited by shares | Live |