| SIYI LIMITED | Private company limited by shares | Live Commenced dormancy on 20-Sep-2007 |
| Siyi Trade Limited | | Live |
| HK SIYIDA TOOL GROUP LIMITED | Private company limited by shares | Live |
| SIYILAI TRADE LIMITED | Private company limited by shares | Live |
| Siyili Intelligent Technology Co., Limited | Private company limited by shares | Live |
| SIYIMENG NETWORK TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SIYIN BB LIMITED | | Live |
| HK SIYING INT'L CO., LIMITED | Private company limited by shares | Live |
| SIYING INDUSTRIAL LIMITED | Private company limited by shares | Live |
| HK SIYING PRINTING CO., LIMITED | Private company limited by shares | Live |
| SIYING INTERNATIONAL TRADE CO., LIMITED | Private company limited by shares | Dissolved |
| SIYIPU TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| HONGKONG SIYISI TRADE CO., LIMITED | Private company limited by shares | Live |
| HongKong Siyiwu Investment Limited | | Live |