| Company Name | Type | Status |
|---|---|---|
| Seoi Co. Limited | Live | |
| HK KA SEOI LIMITED | Live | |
| Lung Seoi Hong Kong Limited | Private company limited by shares | Live |
| HK Hoi Hang Seoi Construction Technology Co., Limited | Live | |
| SEOIBA (HONGKONG) LIMITED | Private company limited by shares | Live |
| SEOIL INTERNATIONAL CO., LIMITED | Private company limited by shares | Dissolved |