Income taxes (Details 1) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Income (Loss) before income tax expenses	$ 1,691,003	$ 758,130
Income tax expenses (benefits) computed at statutory tax rates	429,769	159,207
Foreign tax rate differential
Effect of deductible research and development expenses	8,267
Effect of temporary differences	14,405
Effect of change in valuation allowance	20,246	(159,207)
Income tax expenses (benefits)	$ 473,047