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INVENTORIES, NET (Tables)
12 Months Ended
Dec. 31, 2020
Subclassifications of assets, liabilities and equities [abstract]  
Schedule of Inventory
As of December 31,
20202019
Raw materials, materials and spare parts606,429 731,901 
Goods in process838,403 975,553 
Finished goods313,257 396,401 
Goods in transit302,302 116,610 
Obsolescence allowance (Note 18)(58,610)(62,167)
Inventories, net 2,001,781 2,158,298