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SEGMENT INFORMATION - Net sales by product (Details) - BRL (R$) R$ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
SEGMENT INFORMATION |  |  |  |
Net sales | R$ 9,159,634 | R$ 11,519,655 | R$ 20,436,017 | R$ 21,262,490
Market pulp |  |  |  |
SEGMENT INFORMATION |  |  |  |
Net sales |  |  | R$ 16,302,347 | R$ 17,496,421
Fluff pulp |  |  |  |
SEGMENT INFORMATION |  |  |  |
Percentage of total net sales |  |  | 0.80% | 0.80%
Printing and writing paper |  |  |  |
SEGMENT INFORMATION |  |  |  |
Net sales |  |  | R$ 3,384,698 | R$ 3,089,666
Tissue |  |  |  |
SEGMENT INFORMATION |  |  |  |
Percentage of total net sales |  |  | 3.10% | 2.50%
Paperboard |  |  |  |
SEGMENT INFORMATION |  |  |  |
Net sales |  |  | R$ 708,576 | R$ 644,809
Other products |  |  |  |
SEGMENT INFORMATION |  |  |  |
Net sales |  |  | R$ 40,396 | R$ 31,594

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