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Note 6 - Contract Assets and Contract Liabilities - Contract Assets and Liabilities (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2025	Dec. 31, 2024
Cost incurred	$ 2,110,111	$ 2,512,901
Unbilled project deliveries	0	51,442
VAT	254,767	93,961
Other receivables	9,584	20,972
Prepayments	(1,336,814)	(1,121,897)
Contract with Customer, Asset (Liability), Net	1,037,648	1,557,379
Contract assets	1,140,358	1,666,698
Contract liabilities	(102,710)	(109,319)
Contract with Customer, Asset (Liability), Net	$ 1,037,648	$ 1,557,379

X

- Definition

The amount of contract with customer classified as assets, net of liabilities.

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The amount of costs incurred in a contract with customer.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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Amount of revenue recognized from performance obligation satisfied or partially satisfied in previous reporting periods. Includes, but is not limited to, change in transaction price.

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Amount due from parties in nontrade transactions, classified as other.

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Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet.

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Carrying amount as of the balance sheet date of value added taxes due either from customers arising from sales on credit terms, or as previously overpaid to tax authorities.

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