Related party transactions and balances - Sales to a related party (Details) - USD ($)	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Related Party Transaction [Line Items]
Revenue	$ 130,528,652	$ 131,818,073
Related Party
Related Party Transaction [Line Items]
Revenue	2,258,887	799,967
Foremost Worldwide Co., Ltd. \| Related Party
Related Party Transaction [Line Items]
Revenue	$ 2,258,887	$ 799,967

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details