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7. INVENTORIES (Details 1) - BRL (R$)
R$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Inventories Details 1Abstract    
Provision for inventory losses, beginning R$ (135,840) R$ (101,176)
(Estimated losses) / Reversal of inventories with low turnover and obsolescence (21,914) (34,664)
Provision for inventory losses, ending R$ (157,754) R$ (135,840)