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Trade accounts payable (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Trade accounts payable |  |
Trade accounts payable | R$ 632,565 | R$ 621,179
Domestic |  |
Trade accounts payable |  |
Trade accounts payable | 559,885 | 575,631
Foreign |  |
Trade accounts payable |  |
Trade accounts payable | R$ 72,680 | R$ 45,548

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