| CORETEK LIMITED | Private company limited by shares | Live |
| CORETEK TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| CORETEK ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| CORETEK ELECTRONICS LIMITED | Private company limited by shares | Live |
| CORETEK ENTERPRISE LIMITED | Private company limited by shares | Live |
| Coretek Group Limited | Private company limited by shares | Live |
| CORETEK INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| CORETEK INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| CoreTek Info Limited | Private company limited by shares | Live |
| CORETEK INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Coretek Semiconductor Co., Limited | Private company limited by shares | Live |