5212.21 - Unbleached:

This HTS category, 5212.21, specifically covers unbleached woven fabrics of cotton that have a weight exceeding 200 grams per square meter. This classification focuses on the raw, undyed, and unprinted state of heavier cotton textiles, emphasizing their substantial weight and construction.

It is crucial to distinguish this category from its siblings. Unlike categories 5212.22 (Bleached), 5212.23 (Dyed), 5212.24 (Of yarns of different colors), and 5212.25 (Printed), this classification is reserved for fabrics in their natural state, prior to any coloring or printing processes. The "unbleached" designation is a primary differentiating factor.

Within this category, further subdivisions exist to refine the classification based on material composition. Subcategory 5212.21.10 addresses fabrics that contain a significant amount of wool or fine animal hair, specifically 36 percent or more by weight. The broader subcategory, 5212.21.60, encompasses all other unbleached woven cotton fabrics weighing over 200 g/m² that do not meet the criteria for the first subcategory.