| KUANTECH COMPANY LIMITED | Private company limited by shares | Live |
| HK KUANTECH COMPANY LIMITED | Private company limited by shares | Live |
| KUANTECH POWER DEVICES CO., LIMITED | Private company limited by shares | Dissolved |
| KUANTECH (HK) CO., LIMITED | Private company limited by shares | Live |
| KUANTECH INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| Kuantech Ktec Co., Limited | Private company limited by shares | Live |
| KUANTECH ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| KUANTECH (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| KUANTECH POWER COMPANY LIMITED | Private company limited by shares | Dissolved |
| KUANTECH TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |