v3.26.1
Related party transactions and balances - Accounts Payables (Details) - Related Party - USD ($)
Jun. 30, 2026
Dec. 31, 2025
Related Party Transaction [Line Items]    
Accounts payable $ 54,536 $ 49,855
Rizhao Foremost Woodwork Manufacturing Co., Ltd.    
Related Party Transaction [Line Items]    
Accounts payable $ 54,536 $ 49,855