4804.52.00 - Bleached uniformly throughout the mass and of which more than 95 percent by weight of the total fiber content consists of wood fibers obtained by a chemical process

This category encompasses kraft paper and paperboard that are not coated, presented in rolls or sheets, and specifically weigh 225 grams per square meter or more. Crucially, these materials must be bleached uniformly throughout their mass. Furthermore, a key defining characteristic is that the fiber content must consist of more than 95 percent by weight of wood fibers derived from a chemical pulping process. This technical requirement distinguishes it from papers made using mechanical pulping or significant proportions of other fiber types.

The distinction from its sibling category, 4804.51.00.00, lies in the bleaching process. While both cover other kraft paper and paperboard weighing 225 g/m² or more, 4804.51.00.00 is for unbleached varieties. This node, 4804.52.00, is specifically for the bleached versions that meet the stringent chemical fiber content requirement.

Within this classification, further subdivisions exist to refine the classification based on end-use. The subcategory 4804.52.00.10 is designated for base stock specifically intended for the manufacture of milk cartons and other beverage containers. The remaining goods that fit the primary criteria but do not serve this specific purpose will be classified under the "Other" subcategory, requiring a detailed examination of their precise application and further specifications if needed.