v3.26.1
LEASE - Summary of lease cost (Details) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
LEASE      
Operating leases cost excluding short-term rental expense $ 331,706 $ 358,434 $ 420,552
Short-term lease cost 119,568 18,690 12,213
Total $ 451,274 $ 377,124 $ 432,765