5503.90.10.00 - Of vinyon

This HTS subheading, 5503.90.10.00, specifically classifies man-made staple fibers that are not carded, combed, or otherwise processed for spinning, and are derived from vinyon. Vinyon is a synthetic fiber produced from vinyl chloride polymers, often characterized by its excellent resistance to chemicals and water. This category applies to vinyon staple fibers that have not undergone further preparation beyond their initial production and cutting into staple lengths.

This classification is distinct from its sibling category, 5503.90.90.00 ("Other"), which covers all other man-made staple fibers not carded, combed, or otherwise processed for spinning that are not specifically vinyon. Therefore, the primary distinguishing factor is the material composition; goods classified under 5503.90.10.00 must be verifiably made of vinyon.

As this is a leaf node in the HTS structure, there are no further subcategories. Classification under this code is definitive for raw, unworked vinyon staple fibers. Importers and exporters should ensure that documentation clearly indicates the fiber's composition as vinyon to support correct classification.