7019.63.90.30 - Silica filament fabric of filaments with silica content greater than 93 percent (622)

This HTS category encompasses woven fabrics specifically manufactured from silica filaments, where the silica content of these filaments exceeds 93 percent. These fabrics are characterized by their plain weave construction and are not coated or laminated. The "(622)" designation within the description further specifies a particular type or characteristic of these high-silica content glass filament fabrics, likely related to specific manufacturing or performance attributes relevant to customs valuation or control.

Distinguishing this category from its sibling, 7019.63.90.60 (Other), hinges on the explicit requirement for the fabric to be "colored." While both fall under mechanically bonded, closed woven fabrics of plain weave yarns not coated or laminated, this specific subcategory is reserved for those instances where the silica filament fabric has undergone a coloration process. The sibling category would therefore cover uncolored or naturally colored variations of the same type of woven silica filament fabric.

As this is a leaf node, there are no further subcategories to introduce. Classification within this specific HTS code is therefore definitive for woven fabrics meeting the stated criteria of silica filament composition greater than 93 percent and exhibiting coloration, within the broader context of glass fiber woven fabrics.