Styrofoam Beads EPS
Expandable polystyrene beads used for molding into foam products like packaging and insulation. These pre-expanded or unexpanded beads contain pentane as a blowing agent and fall under HTS 3903.11.00.00 as expandable polystyrene in primary form before molding or expansion into finished articles.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If styrene-acrylonitrile copolymer (SAN)
Copolymers where SAN units predominate over 95% classify under specific copolymer subheading per note (a)(2).
If chemically modified or blended with ethylene polymers
Modified polymers not meeting pure polystyrene criteria fall into 'Other' or predominant monomer subheadings.
If imported as pre-expanded sheets or profiles
Processed into non-cellular or cellular forms beyond primary beads, moving from Chapter 39 heading 3903 to 3923.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify monomer content exceeds 95% styrene per subheading note (a)(1) to confirm classification as polystyrene
• Include technical data sheets proving expandability and primary form status to avoid reclassification as finished foam
• Check for hazardous material declarations due to pentane blowing agent content
Related Products under HTS 3903.11.00.00
EPS Raw Expanded Beads
Pre-foamed expandable polystyrene beads in granular form for rotational molding and foam block production. Classified under 3903.11.00.00 as they remain in primary expandable form with blowing agent intact, prior to final shaping.
Pentane-Infused EPS Pellets
Polystyrene pellets impregnated with pentane blowing agent for steam expansion in foam molding applications. HTS 3903.11.00.00 covers these expandable primary forms distinguished from rigid polystyrene.
White EPS Pre-Puff Beads
White-colored expandable polystyrene pre-puff beads for producing lightweight foam packaging inserts. Falls under 3903.11.00.00 as primary form polymers before final expansion and molding processes.
Unexpanded EPS Granules
Unexpanded polystyrene granules containing blowing agent for in-plant expansion into foam blocks. HTS 3903.11.00.00 precisely covers these primary form expandable polystyrene materials.
High-Index EPS Beads H100
High expansion index (H100) polystyrene beads for thin-walled foam molding applications. Primary expandable form per 3903.11.00.00 before steam chest molding into custom shapes.
Recyclable EPS Expandable Pellets
Recycled-content expandable polystyrene pellets designed for sustainable foam production. Still classified under 3903.11.00.00 as meeting polymer content rules in primary expandable form.