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Note 6 - Contract Assets and Contract Liabilities - Contract Assets and Liabilities (Details) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2025
Dec. 31, 2024
Cost incurred $ 1,909,264 $ 2,512,901
Unbilled project deliveries 0 51,442
VAT 305,184 93,961
Other receivables 11,387 20,972
Prepayments (1,331,905) (1,121,897)
Contract with Customer, Asset (Liability), Net 893,930 1,557,379
Contract assets 964,171 1,666,698
Contract liabilities (70,241) (109,319)
Contract with Customer, Asset (Liability), Net $ 893,930 $ 1,557,379