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COST OF SALES

12 Months Ended

Dec. 31, 2021

Analysis of income and expense [abstract]

COST OF SALES

COST OF SALES


						Year ended December 31,
						2021						2020						2019


Inventories at the beginning of the year						2,001,781						2,158,298						2,689,829


Translation differences						—						—						(21,919)

Plus: Charges for the year
Raw materials and consumables used and other movements						9,835,504						5,359,938						6,165,654
Services and fees						151,251						112,924						151,373
Labor cost						689,614						546,045						611,615
Depreciation of property, plant and equipment						514,746						527,283						508,934
Amortization of intangible assets						23,519						14,624						17,805
Maintenance expenses						582,633						371,368						467,090
Office expenses						7,741						6,131						8,513

Insurance						12,309						10,641						9,674
Change of obsolescence allowance						3,965						(1,279)						8,413
Recovery from sales of scrap and by-products						(37,597)						(20,892)						(23,793)
Others						17,909						16,623						17,550

Less: Inventories at the end of the year						(3,908,305)						(2,001,781)						(2,158,298)

Cost of Sales						9,895,070						7,099,923						8,452,440