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Note 14 - Inventories, Net
 12 Months Ended
Dec. 31, 2019
Statement Line Items [Line Items]  
Disclosure of inventories [text block]
14
Inventories, net
 
    Year ended December 31,
    2019   2018
Finished goods    
968,329
      
1,025,999
  
Goods in process    
612,888
      
709,497
  
Raw materials    
221,954
      
256,816
  
Supplies    
486,411
      
504,286
  
Goods in transit    
194,015
      
237,539
  
     
2,483,597
      
2,734,137
  
Allowance for obsolescence (see Note 23 (i))    
(217,717
 )    
(209,796
 )
     
2,265,880
      
2,524,341