PET Battery Separator Film from Mexico
Microporous polyester film used as separators in lithium-ion batteries, classified 3920.69.00.00 if noncellular structure predominates despite porosity. Ensures electrolyte flow and safety.
Duty Rate — Mexico → United States
14.2%
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
• Provide Gurley air permeability and shutdown temperature data for separator specs
• Confirm non-woven/microcellular vs. true noncellular for 3920 vs. 3921