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Inventories (Tables)
6 Months Ended
Jun. 30, 2020
Inventory Disclosure [Abstract]  
Schedule of Inventories
    US dollars  
    June 30,     December 31,  
    2020     2019  
    (unaudited)        
Raw materials     27,956       18,381  
Work in process     1,630,296       1,541,932  
Finished products     51,282       80,886  
      1,709,534       1,641,199  
Less – provision for slow moving inventory     (1,456,597 )     (1,456,597 )
      252,937       184,602