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SITCSection 5
U.S. imports of polystyrene plates, sheets, film, foil & strip (non-self-adhesive, unreinforced) (SITC 58223) totaled $12.9M in April 2026, traded with 28 countries.
Importers of Polystyrene Plates, Sheets, Film, Foil & Strip (Non-Self-Adhesive, Unreinforced) paid $596K in duties in April 2026 — an effective duty rate of 17% on $3.5M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataFlat forms of polystyrene — including general-purpose (GPPS) and high-impact (HIPS) grades — serve the food-service disposables, refrigerator liner, and point-of-purchase display industries, where rigidity and thermoformability are key selection criteria. The distinction between cellular (foam) and non-cellular polystyrene flat forms is a fundamental classification boundary: expanded or extruded polystyrene foam sheet is classified separately, while this heading captures solid, non-cellular film and sheet. Importers should confirm the cellular character of the product before filing, as misclassification between foam and solid sheet is a common audit finding.
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Cellular polystyrene — such as extruded polystyrene (XPS) or expanded polystyrene (EPS) sheet — is classified under a separate foam plastics heading. Non-cellular polystyrene sheet is solid and transparent or opaque without a foam structure. Physical examination, density measurement, and manufacturer technical data sheets are the standard tools used to confirm the cellular character at entry.
Thermoformed food-service trays and cups, refrigerator interior liners, point-of-purchase display panels, and medical device packaging are the primary end-use applications. High-impact polystyrene (HIPS) is preferred where impact resistance is needed, while general-purpose polystyrene (GPPS) is chosen for clarity and rigidity in display applications.
| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | $7.4M | $2.7M | -$4.7M |
| CANADA | $2.1M | $4.5M | +$2.4M |
| JAPAN | $704K | $129K | -$575K |
| CZECH REPUBLIC | $565K | -- | -$565K |
| KOREA, SOUTH | $492K | -- | -$492K |
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Monthly import values over time