5402.45.10.00 - Colored multifilament, untwisted or with a twist of less than 5 turns per meter, measuring not less than 22 decitex per filament, certified by the importer to be used in the manufacture of wigs for dolls

This HTS category, 5402.45.10.00, specifically classifies colored multifilament yarn made of nylon or other polyamides. The yarn must be untwisted or have a twist of less than 5 turns per meter. Crucially, it must measure at least 22 decitex per filament. Furthermore, for classification under this specific code, the importer must certify that the yarn is intended for use in the manufacture of wigs for dolls. This ensures that a very specific end-use application is met, distinguishing it from general-purpose nylon multifilament yarns.

At this level of detail, the primary distinction lies in the end-use certification. While sibling category 5402.45.90 covers "Other" nylon or polyamide yarns that do not meet the specific criteria for doll wig manufacturing, this code is reserved for those yarns definitively designated for this niche application. The physical characteristics (multifilament, untwisted or low twist, and decitex range) are shared with other categories within 5402.45, but the mandated end-use for doll wig production is the key differentiator for 5402.45.10.00.

As this is a leaf node in the HTS structure, there are no further subcategories. Classification under 5402.45.10.00 is definitive once all the stipulated criteria, including the importer's certification of end-use for doll wigs, are met. This level of specificity is designed to capture a particular commodity with unique trade implications.