4810.13.70.20 - Containing by weight 25 percent or more cotton fiber

This HTS category, 4810.13.70.20, specifically classifies paper and paperboard that meets the criteria of being coated on one or both sides with kaolin or other inorganic substances, with or without a binder, and without any other coating. This paper is intended for writing, printing, or other graphic purposes and is not produced primarily from mechanical or chemi-mechanical pulping processes (or contains no more than 10% of such fibers by weight). Crucially, this subcategory is further distinguished by containing 25 percent or more cotton fiber by weight within its composition.

Distinguishing this category from its sibling, 4810.13.70.40 (Other), hinges on the specific fiber content. While both fall under the broader "Other" classification for uncoated, non-mechanical pulp papers in rolls, this particular node isolates those with a significant cotton fiber component of 25% or more. This distinction is vital for duty rate determination and trade analysis, as the inclusion of cotton can influence the paper's properties and market value.

As a leaf node, this category does not have further subcategories. Therefore, classification within this HTS code is definitive once the paper meets all the preceding criteria, including its coated nature, intended use, non-mechanical pulp fiber percentage, and, most importantly, the specified cotton fiber content of 25 percent or more by weight. Examples within this classification would include specialty papers with enhanced strength or texture due to their cotton fiber inclusion, intended for high-quality printing or archival purposes.