| SEYA MECHATRONICS LIMITED | Private company limited by shares | Dissolved |
| SEYA TECHNOLOGY (ASIA) LIMITED | Private company limited by shares | Live |
| Seyaa Diamonds Limited | Private company limited by shares | Live |
| EAST SEYAN GROUP CO., LIMITED | Private company limited by shares | Live |
| SEYAN (HONG KONG) TREATMENT LIMITED | Private company limited by shares | Dissolved |
| SEYANG YBS LIMITED | Private company limited by shares | Live |
| HONGKONG SEYARN INDUSTRIES CO., LIMITED | Private company limited by shares | Live |
| SEYARUS LIMITED | Private company limited by shares | Dissolved |