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Battery Grade PP Microporous Membrane

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.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China6.5%+35.0%41.5%
🇲🇽Mexico6.5%+10.0%16.5%
🇨🇦Canada6.5%+10.0%16.5%
🇩🇪Germany6.5%+10.0%16.5%
🇯🇵Japan6.5%+10.0%16.5%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

8507.60.00Higher: 53.4% vs 41.5%

If imported as complete battery component set

Electric storage batteries including integral separators classified by apparatus.

3920.99Lower: 15.8% vs 41.5%

If blends with <95% propylene monomer

Per subheading note (a)(4), copolymer predominating other monomer goes to that series.

3921.19.00Same rate: 41.5%

If cellular polycarbonate or polysulfone

Specific cellular polymers like polysulfone separators have dedicated subheadings.

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Import Tips & Compliance

• 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

Related Products under HTS 3921.19.00.10

Microporous Polyethylene Breathable Film

This is a cellular microporous polyethylene film designed for breathable applications, allowing vapor transmission while blocking liquids. It falls under HTS 3921.19.0010 as it is a microporous sheet of polyethylene, classified as 'other plastics' cellular plates, sheets, film with microvoids formed during extrusion.

Housewrap Microporous Polypropylene Film

Microporous polypropylene breathable film used in construction housewrap for moisture vapor transmission. Falls under HTS 3921.19.0010 as cellular microporous sheet of polypropylene in the 'other plastics' category.

Microporous Polyethylene Roofing Underlayment Film

Breathable microporous PE film sheet serving as synthetic roofing underlayment, preventing moisture buildup. HTS 3921.19.0010 applies to its cellular microporous polyethylene construction as 'other plastics' sheets.

Breathable PE Diaper Backing Film

Microporous polyethylene film used as soft, breathable backsheet in disposable diapers. HTS 3921.19.0010 covers this cellular microporous polyethylene sheet in the other plastics cellular series.

Surgical Drape Microporous PP Film

Microporous polypropylene film for sterile surgical drapes and gowns, providing bacterial barrier with breathability. Falls under HTS 3921.19.0010 as cellular microporous polypropylene sheet.

HVAC Microporous Polyethylene Filter Media

Microporous PE sheet media for HVAC particulate filters, capturing fine dust while allowing airflow. HTS 3921.19.0010 for cellular microporous polyethylene film classification.