| WINSEA COMPANY LIMITED | Private company limited by shares | Dissolved |
| WINSEA CORPORATION LIMITED | Private company limited by shares | Dissolved |
| WINSEA (HONG KONG) LIMITED | Private company limited by shares | Live |
| Hong Kong Winsea Property Limited | Private company limited by shares | Live |
| Winsea International Limited | Private company limited by shares | Live |
| WINSEA TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| WinSea of DMU Technology Group Co., Limited | | Live |
| WINSEA INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| Winseas International Group Co., Limited | | Live |
| WINSEASON HK LIMITED | Private company limited by shares | Dissolved |
| Winseason Technology Co., Limited | Private company limited by shares | Live |