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7. INVENTORIES (Details 1) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
DisclosureOfInventoriesLineItems [Line Items] |  |
Beginning balance | R$ (68,157) | R$ (138,105)
Additions | (207,898) | (245,398)
Reversals | 85,816 | 95,881
Write-offs | 114,803 | 219,153
Exchange rate variation | (269) | 312
Ending balance | (75,705) | (68,157)
Realizable value through sale [member] |  |
DisclosureOfInventoriesLineItems [Line Items] |  |
Beginning balance | (10,712) | (65,490)
Additions | (106,357) | (81,988)
Reversals | 85,816 | 95,881
Write-offs |  | 41,156
Exchange rate variation | 98 | (271)
Ending balance | (31,155) | (10,712)
Impaired inventories [member] |  |
DisclosureOfInventoriesLineItems [Line Items] |  |
Beginning balance | (42,526) | (60,586)
Additions | (91,237) | (153,881)
Reversals |  |
Write-offs | 104,115 | 171,637
Exchange rate variation | (183) | 304
Ending balance | (29,831) | (42,526)
Obsolete inventories [member] |  |
DisclosureOfInventoriesLineItems [Line Items] |  |
Beginning balance | (14,919) | (12,029)
Additions | (10,304) | (9,529)
Reversals |  |
Write-offs | 10,688 | 6,360
Exchange rate variation | (184) | 279
Ending balance | R$ (14,719) | R$ (14,919)

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