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Discontinued operations - (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Discontinued Operations and Disposal Groups [Abstract]      
REVENUES $ 2,589,823 $ 5,505,734
COST OF REVENUES 1,603,887 3,527,402
GROSS PROFIT 985,936 1,978,332
Selling 607,424 3,368,714
General and administrative 954,576 6,142,730
Research and development 922,343 3,323,361
Long-live assets impairment 2,602,589 2,631,019
Total operating expenses 5,086,932 15,465,824
LOSS FROM OPERATIONS (4,100,996) (13,487,492)
Interest income 1,296 2,994
Interest expense (33,682) (1,450,707)
Other (expense) income, net (154,275) 1,206,793
Total other income (expense), net (186,661) (240,920)
LOSS FROM DISCONTINUED OPERATIONS BEFORE INCOME TAXES (4,287,657) (13,728,412)
GAIN ON THE SALE OF DISCONTINUED OPERATIONS BEFORE INCOME TAXES 22,858,286
TOTAL INCOME(LOSS) FROM DISCONTINUED OPERATIONS BEFORE INCOME TAXES 18,570,629 (13,728,412)
INCOME TAX EXPENSE(BENEFIT) (77,649)
INCOME(LOSS) FROM DISCONTINUED OPERATIONS, NET OF TAX $ 18,570,629 $ (13,650,763)