Polypropylene Microporous Separator Film from Mexico
A microporous polypropylene sheet used as battery separators, featuring interconnected pores for electrolyte flow. Classified in HTS 3921.19.0010 due to its cellular microporous structure of polypropylene film, meeting the 'other plastics' cellular category.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include technical data sheets proving Gurley air permeability <500 sec/100cc and porosity 30-50% for proper 3921.19.0010 classification
• Ensure COO certification; many origins qualify for Free (AU,CA) but confirm via HTS special column