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INVENTORIES - Balances (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Inventory [Line Items] |  |
Work in process | R$ 135,380 | R$ 93,325
Spare parts and other | 1,302,534 | 931,052
Expected credit losses | (97,934) | (95,053)
Inventories | 7,962,324 | 5,946,948
Pulp | Domestic (Brazil) |  |
Inventory [Line Items] |  |
Finished goods | 801,623 | 576,774
Pulp | Foreign |  |
Inventory [Line Items] |  |
Finished goods | 1,510,985 | 1,271,335
Paper | Domestic (Brazil) |  |
Inventory [Line Items] |  |
Finished goods | 561,409 | 569,771
Paper | Foreign |  |
Inventory [Line Items] |  |
Finished goods | 362,027 | 137,653
Wood |  |
Inventory [Line Items] |  |
Work in process | 2,287,406 | 1,666,817
Operating supplies and packaging |  |
Inventory [Line Items] |  |
Work in process | R$ 1,098,894 | R$ 795,274

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