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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, 2022 | Dec. 31, 2021 | Dec. 31, 2020
SEGMENT INFORMATION |  |  |
Net sales | R$ 49,830,946 | R$ 40,965,431 | R$ 30,460,277
Market pulp |  |  |
SEGMENT INFORMATION |  |  |
Net sales | R$ 41,384,322 | R$ 34,715,208 | 25,578,265
Market pulp | China |  |  |
SEGMENT INFORMATION |  |  |
Percentage of total net sales | 42.12% | 44.41% |
Market pulp | United States |  |  |
SEGMENT INFORMATION |  |  |
Percentage of total net sales | 14.08% | 14.67% |
Fluff pulp |  |  |
SEGMENT INFORMATION |  |  |
Percentage of total net sales | 0.80% | 0.70% |
Printing and writing paper |  |  |
SEGMENT INFORMATION |  |  |
Net sales | R$ 6,912,984 | R$ 5,107,960 | 3,891,002
Printing and writing paper | United States |  |  |
SEGMENT INFORMATION |  |  |
Percentage of total net sales | 23.49% | 24.30% |
Printing and writing paper | Peru |  |  |
SEGMENT INFORMATION |  |  |
Percentage of total net sales | 9.04% | 10.03% |
Printing and writing paper | Argentina |  |  |
SEGMENT INFORMATION |  |  |
Percentage of total net sales | 19.81% | 13.03% |
Tissue |  |  |
SEGMENT INFORMATION |  |  |
Percentage of total net sales | 2.30% | 2.20% |
Paperboard |  |  |
SEGMENT INFORMATION |  |  |
Net sales | R$ 1,421,338 | R$ 1,091,588 | 935,047
Other |  |  |
SEGMENT INFORMATION |  |  |
Net sales | R$ 112,302 | R$ 50,675 | R$ 55,963

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