Polystyrene Resin GPPS 525
General purpose polystyrene (GPPS) 525 is a high-impact transparent resin made from styrene monomer exceeding 95% by weight, used in packaging and consumer goods. It falls under HTS 3903.90.5000 as 'Other' polymers of styrene in primary forms, not specifically named elsewhere in the series. This classification follows subheading note (a)(1) for polymers where the styrene monomer unit predominates.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If acrylonitrile-butadiene-styrene (ABS) copolymer with specific comonomer ratios
ABS copolymers meeting 3901.40 criteria (95%+ comonomer units) classify under named copolymer subheading per note (a)(2), not general styrene polymers.
If chemically modified styrene polymer not covered elsewhere
Chemically modified polymers go to 'Other' per note (a)(3), but if modification fits 3903.20 (styrene-acrylonitrile), it shifts there instead of 3903.90.
If imported as polymer in oil suspension
Polymers in primary forms suspended in mineral oils classify under petroleum products in Chapter 27, not Chapter 39.
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Import Tips & Compliance
• Provide detailed monomer composition certificates to verify >95% styrene content per subheading note (a)(1) for proper classification
• Ensure SDS and technical data sheets specify 'primary form' (pellets/resin) to avoid misclassification as finished articles under Chapter 39 headings like 3923
Related Products under HTS 3903.90.50.00
Foam Grade Polystyrene FGPS 100
FGPS 100 polystyrene beads for foam production, >95% styrene per note (a)(1), primary form. HTS 3903.90.5000.
High Impact Polystyrene HIPS 825
HIPS 825 is a polystyrene resin with rubber modifiers for enhanced toughness, where styrene units exceed 95% by weight of total polymer content. Classified in HTS 3903.90.5000 as 'Other' styrene polymers in primary forms (pellets). Meets subheading note (a)(1) as it is not a specifically named copolymer.
Expandable Polystyrene EPS Beads F400
EPS F400 consists of polystyrene beads impregnated with pentane blowing agent, with styrene monomer >95% by weight in primary bead form. It is classified under HTS 3903.90.5000 as 'Other' polymers of styrene in primary forms. Subheading note (a)(1) applies as it is not chemically modified or a named copolymer.
Crystal Polystyrene GPPS 535H
GPPS 535H is a clear, crystal-grade polystyrene resin for injection molding, composed of >95% styrene monomer units in pellet form. Falls under HTS 3903.90.5000 as other styrene polymers in primary forms per subheading note (a)(1). Used in electronics housings and toys.
Super High Impact Polystyrene SHIPS 700
SHIPS 700 polystyrene features advanced rubber modification for superior impact resistance, styrene >95% by weight in primary pellets. Classified HTS 3903.90.5000 'Other' per note (a)(1) as non-specific styrene polymer. Ideal for appliance housings.
Flame Retardant Polystyrene FRPS V0
FRPS V0 is polystyrene resin with halogen-free flame retardants, styrene monomer contributing >95% polymer weight in primary form. HTS 3903.90.5000 as 'Other' styrene polymers; retardants treated as additives per notes. Used in electrical components.