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Inventory (Tables)
 12 Months Ended
Dec. 31, 2024
Disclosure Inventory Abstract  
Schedule of inventories
   
  2024 2023
  Finished products   126,916   97,396
  Semi-finished products   94,980   90,220
  Raw materials   37,857   69,439
  Auxiliary materials and consumables   105,160   121,126
  Inventory provisions   (39,717)   (38,510)
Total    325,196   339,671
Schedule of changes in the provision for obsolescence
   
  2024 2023
 Balance at the beginning of the year (38,510) (95,602)
 Additions (30,258) (28,428)
 Reversals 21,663 89,200
 Foreign exchange gains (losses) 5,445 (3,680)
 Divestments – note 1 (a) 1,943 -
 Balance at the end of the year (39,717) (38,510)