| Company Name | Type | Status |
|---|---|---|
| SIEC HOLDING LIMITED | Private company limited by shares | Live |
| SIEC HONGKONG INTERNATIONAL EDUCATION GROUP LIMITED | Live | |
| VOGUE DU SIECLE LIMITED | Private company limited by shares | Dissolved |
| SIECOM CO., LIMITED | Private company limited by shares | Live |
| SIECO-TECH LIMITED | Private company limited by shares | Live |