Spandex Pre-Polymer Resin from Mexico
A primary form elastomeric polyurethane pre-polymer resin used in the production of spandex fibers for stretch fabrics. It qualifies under 3909.50.10.00 due to its high polyurethane monomer content (>95% by weight) and inherent elastomeric stretch properties. Supplied as viscous liquid or granules for fiber spinning processes.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Include detailed monomer analysis certificates showing polyurethane dominance to comply with Chapter 39 polymer classification hierarchy
• Declare as 'primary forms' only if uncompounded; compounded masterbatches may require different classification
• Watch for misdeclaration as finished spandex yarn, which falls under Chapter 54, leading to incorrect duty assessment