Battery Grade PP Microporous Membrane from Mexico
High-purity microporous polypropylene membrane for lithium-ion battery separators with controlled pore distribution. Classified under HTS 3921.19.0010 for microporous polypropylene cellular film sheets.
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 shutdown temperature data (>130°C) proving separator functionality without changing classification
• Anti-dumping risks from Asia; verify scope exclusions for certain copolymers
• Classify as film regardless of thinness (<0.1mm); thickness doesn't affect heading