Inventories are stated at the lower of acquisition cost or net realizable value (see Note 6). The cost value of inventory is measured using the weighted average cost and includes the costs of acquisition and processing directly and indirectly related to the units produced based on the normal capacity of production. Estimates of net realizable value are based on the average selling prices at the end of the reporting period, net of applicable direct selling expenses. Subsequent events related to the fluctuation of prices and costs are also considered, if relevant. If net realizable values are below inventory costs, a provision corresponding to this difference is recognized. Provisions are also made for obsolescence of products, materials, or supplies that (i) do not meet its subsidiaries’ specifications, (ii) have exceeded their expiration date, or (iii) are considered slow-moving inventory. This classification is made by management with the support of its industrial and operations teams.