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Payables to third parties (Tables)
12 Months Ended
Dec. 31, 2018
Text block [abstract]  
Payables to third parties
13.

Payables to third parties

 

     December 31,
2018
     December 31,
2017
 

Payables to third parties

     4,324,198        3,080,569  
  

 

 

    

 

 

 
     4,324,198        3,080,569