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6. Inventories (Details 2) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Inventories Details 2
Net realizable value adjustment	R$ 19,817	R$ 26,530
Obsolescence and other losses	17,282	20,741
Provision for losses related to inventories	R$ 37,099	R$ 47,271	R$ 33,992	R$ 46,325

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Provision for loss on the value of inventories.

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Net realizable value adjustment on the value of inventories.

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Obsolescence and other losses on the value of inventories.

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