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Right-of-use assets (Table)
 6 Months Ended
Jun. 30, 2020
Right-of-use assets [Abstract]  
Schedule of right-of-use assets

   Prepaid land lease payments 
Balance as of January 1, 2020  $7,194,195 
Amortization charge for the period   (79,881)
Foreign exchange adjustment   (103,601)
Balance as of June 30, 2020  $7,010,713