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Prepaid Expense (Details) - Schedule of Prepaid Expense - EUR (€)
Jun. 30, 2023
Dec. 31, 2022
Schedule of Prepaid Expense [Abstract]    
Advancement to suppliers for inventory € 884,768 € 632,185
Advancement for PP&E under construction 11,258 26,727
Conference 2,995 61,036
Security deposits and others 15,957 15,658
Total € 914,978 € 735,606