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Financing Income, Net (Tables)
3 Months Ended
Mar. 31, 2020
Other Income and Expenses [Abstract]  
Schedule of Financing Income, Net

    US dollars  
    Three-month period
ended March 31,
 
    2020     2019  
      (unaudited)  
Israeli CPI linkage difference on principal of loans from stockholders     (186 )     (523 )
Exchange rate differences     (121 )     8,063  
Interest Income (expenses) on credit from banks and others     22,028       (4,140 )
      21,721       3,400