v3.26.1
Related party transactions and balances - Accounts Payables (Details) - Related Party - USD ($)
Mar. 31, 2026
Dec. 31, 2025
Related Party Transaction [Line Items]    
Accounts payable $ 40,144 $ 49,855
Rizhao Foremost Woodwork Manufacturing Co., Ltd.    
Related Party Transaction [Line Items]    
Accounts payable $ 40,144 $ 49,855