Yes. The processing stage — raw versus carded or combed — is a classification boundary in the US tariff schedule, and the two forms may carry different duty rates. Importers should confirm the exact HTS classification for carded or combed cashmere with a licensed customs broker, as the applicable rate depends on both the processing state and the specific animal species.

Mills typically specify average fiber diameter (microns), fiber length, vegetable matter content (as a percentage), and color (white versus dehaired). For cashmere, the industry standard targets fiber below 19 microns with minimal coarse hair contamination. Supplier test certificates from accredited wool-testing laboratories (such as IWTO-certified labs) are standard commercial documentation for these transactions.