4810.22.70.20 - Containing by weight 25 percent or more cotton fiber

This HTS code, 4810.22.70.20, specifically classifies paper and paperboard, including that intended for writing, printing, or other graphic purposes, which has undergone a mechanical or chemi-mechanical pulping process and is further characterized by containing a significant amount of cotton fiber. The defining criterion for this subcategory is the presence of 25 percent or more cotton fiber by weight in its total fiber composition. This paper is typically coated on one or both sides with kaolin or other inorganic substances, without additional coatings, and may be surface-colored, decorated, or printed.

Distinguishing this category from its sibling, 4810.22.70.40 (Other), lies solely in the cotton fiber content. While both fall under "Light-weight coated paper" and "Other" at their respective levels, this specific code isolates those papers that meet the stringent 25% cotton fiber threshold. This precise compositional requirement is crucial for accurate tariff application, as it signifies a distinct material characteristic influencing the paper's properties and potential uses.

As this is a leaf node within the HTS, there are no further subcategories to introduce. Classification under 4810.22.70.20 is final once the paper meets all preceding criteria, including being coated with kaolin or other inorganic substances, having more than 10% mechanical pulp content, and specifically containing 25% or more cotton fiber by weight. Examples of products falling here might include specialty papers used in high-quality printing, security documents, or certain decorative applications where the unique qualities of cotton fiber are desired.