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Note 1 - Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

Financing Receivable, Allowance for Credit Loss [Table Text Block]

		March 31, 2024				December 31, 2023
Allowance for doubtful accounts at the beginning of the period		$	134,912			$	59,559
Bad debt expense			37,717				82,066
Receivables written off during the periods			-				(10,298	)
Effect of currency translation			(3,107	)			3,585
Allowance for doubtful accounts at the end of the period		$	169,522			$	134,912

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

										For the Three months
		% Distribution								Ended March 31,
		2024				2023				2024				2023
Americas			28	%			9	%		$	1,197,197			$	333,530
Asia-Pacific			8	%			11	%			342,961				451,895
Europe			63	%			77	%			2,650,915				3,099,785
Middle East & Africa			1	%			3	%			44,271				126,309
			100	%			100	%		$	4,235,344			$	4,011,519

Reconciliation of Revenue from Segments to Consolidated [Table Text Block]

										For the Three Months
		% Distribution								Ended March 31,
		2024				2023				2024				2023
Water			37	%			36	%		$	1,548,666			$	1,434,919
Ceramics			42	%			35	%			1,806,336				1,409,372
Plastics			21	%			29	%			880,342				1,167,228
Corporate			-	%			-	%			-				-
			100	%			100	%		$	4,235,344			$	4,011,519

Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]

		March 31, 2024				December 31, 2023
Cost incurred		$	3,492,545			$	3,225,728
Unbilled project deliveries			547,047				582,557
VAT			184,150				329,980
Other receivables			173,945				92,619
Prepayments			(2,026,550	)			(1,688,427	)
Deferred Revenue			(76,137	)			(33,360	)
		$	2,295,000			$	2,509,097
Distributed as follows:
Contract assets		$	2,848,985			$	2,891,744
Contract liabilities			(553,985	)			(382,647	)
		$	2,295,000			$	2,509,097

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Tabular disclosure of allowance for credit loss on financing receivable.

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