v3.26.1
Taxes (Details 1)
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Income Tax Disclosure [Abstract]    
China statutory income tax rate 25.00% 25.00%
Preferential tax rate reduction 1.98% (0.04%)
Change in valuation allowance (3.59%) 0.81%
Additional R&D deduction in China 0.61% (0.61%)
Permanent difference 0.04% (0.02%)
Tax rate difference outside China [1] (24.23%) (25.14%)
Effective tax rate (0.19%)
[1] It is mainly due to the lower tax rate of the entities incorporated in Hong Kong, and tax exempt in Cayman Islands.