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Payables to third parties (Tables)
12 Months Ended
Dec. 31, 2017
Payables to third parties (Tables) [Abstract]  
Payables to third parties

13. Payables to third parties 

 

  

December 31,

 

 

  

2017

 

  

2016

 

Payables to third parties

  

 

3,080,569

 

  

 

1,304,031

 

  

 

 

 

  

 

 

 

  

 

3,080,569

 

  

 

1,304,031