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SUPPLEMENTAL CASH FLOW INFORMATION (Tables)
12 Months Ended
Dec. 31, 2018
SUPPLEMENTAL CASH FLOW INFORMATION [Abstract]  
Supplemental Cash Flow Information
Non-cash investing and financing activities for the years ended December 31, 2018, 2017 and 2016 are presented below:

  
2018
  
2017
  
2016
 
Unpaid acquisition of PPE
  
307,746
   
299,598
   
47,198
 
Principal payment of financial lease (1)
  
101,965
   
66,075
   
271,843
 
Leasing for PPE acquisition
  
-
       
1,429,713
 

(1)
Cancelled through compensation with trade receivables with the creditor. See Note 13.