| S.E.TEC LIMITED | Private company limited by shares | Live |
| SETEC ASTRONOMY LIMITED | Private company limited by shares | Live |
| SETEC POWER CO., LIMITED | Private company limited by shares | Live |
| Setec Consulting Limited | Private company limited by shares | Live |
| SETEC INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ZHEJIANG SETEC LIGHTING CO., LIMITED | Private company limited by shares | Live |
| SETECH (CHINA) INVESTMENT LIMITED | Private company limited by shares | Live |
| SETECH CO., LIMITED | Private company limited by shares | Live |
| SETECH TOYS LIMITED | Private company limited by shares | Live |