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SEGMENT INFORMATION - Net sales by product (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
SEGMENT INFORMATION |  |  |
Net sales | R$ 47,403,282 | R$ 39,755,575 | R$ 49,830,946
Market pulp |  |  |
SEGMENT INFORMATION |  |  |
Net sales | R$ 37,593,462 | R$ 30,677,265 | 41,384,322
Market pulp | CHINA |  |  |
SEGMENT INFORMATION |  |  |
Percentage of total net sales | 36.92% | 41.36% |
Market pulp | UNITED STATES |  |  |
SEGMENT INFORMATION |  |  |
Percentage of total net sales | 16.08% | 15.32% |
Fluff pulp |  |  |
SEGMENT INFORMATION |  |  |
Percentage of total net sales | 0.70% | 0.80% |
Printing and writing paper |  |  |
SEGMENT INFORMATION |  |  |
Net sales | R$ 8,478,489 | R$ 7,567,320 | 6,912,984
Printing and writing paper | UNITED STATES |  |  |
SEGMENT INFORMATION |  |  |
Percentage of total net sales | 22.50% | 19.49% |
Printing and writing paper | ARGENTINA |  |  |
SEGMENT INFORMATION |  |  |
Percentage of total net sales | 10.96% | 23.68% |
Tissue |  |  |
SEGMENT INFORMATION |  |  |
Percentage of total net sales | 5.80% | 5.10% |
Paperboard |  |  |
SEGMENT INFORMATION |  |  |
Net sales | R$ 1,270,872 | R$ 1,417,075 | 1,421,338
Other |  |  |
SEGMENT INFORMATION |  |  |
Net sales | 60,459 | 93,915 | 112,302
Total of products |  |  |
SEGMENT INFORMATION |  |  |
Net sales | R$ 47,403,282 | R$ 39,755,575 | R$ 49,830,946

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