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Accounts Receivable and Other Receivables, Net (Details) - EUR (€)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Accounts Receivable and Other Receivables, Net [Line Items]      
Allowance for doubtful accounts € 174,888 € 515,564  
Bad debt expense 13,214 138,941 € 84,394
Trade receivables 283,457 € 0  
Customer [Member]      
Accounts Receivable and Other Receivables, Net [Line Items]      
Allowance for doubtful accounts € 353,890