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Schedule of Interest Income (Details) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Notes and other explanatory information [abstract]      
Bank deposits $ 14,535 $ 22,580 $ 19,582
Guarantee deposit 18,692 23,862
Long-term receivables (including current portion) 112,726 218,168 316,793
Total Interest Income $ 145,953 $ 264,610 $ 336,375