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U.S. exports of polymethyl methacrylate (pmma), in primary forms (HS 390610) totaled $8.9M in July 2026.
Importers of Polymethyl Methacrylate (PMMA), in Primary Forms paid $573K in duties in July 2026 — an effective duty rate of 14% on $4.0M in dutiable value, based on actual customs collections rather than the published tariff schedule. Polymethyl Methacrylate (PMMA), in Primary Forms imports of $4.7M in July 2026 ran 19% above the year-to-date monthly average of $4.0M.
Last updated: July 2026 dataPolymethyl methacrylate — universally known in trade as PMMA or acrylic glass — is classified under a single US tariff line (3906100000) and serves as a primary input for optical lenses, display panels, automotive lighting, and architectural glazing, where its optical clarity and weatherability are decisive. Japan is the leading supplier to the US market, followed by South Korea and Italy, reflecting the strong acrylic resin production bases in those countries. PMMA grades vary significantly by molecular weight, optical transmission, and impact modification, and these specifications should be clearly documented on the commercial invoice to support both classification and valuation.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
194 shipments/mo
Impact-modified PMMA, where a rubber phase is incorporated to improve toughness, generally still classifies under 3906100000 as long as PMMA remains the essential character of the primary-form material. However, if the product is a compounded blend where another polymer predominates, reclassification under a different heading may be warranted. A licensed customs broker or CBP binding ruling can resolve borderline cases.
Both pellets and powder are primary forms of PMMA and classify under 3906100000 — the physical presentation (pellets, granules, powder, beads) does not create a separate tariff line within this heading. The duty rate is the same regardless of physical form, though the commercial invoice should accurately describe the form for CBP examination purposes.
HSChapter 39
Subheading 2 of 2 in heading 3906
Subheading 390610 · $4.7M of $101.3M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 3906100000 | Polymethyl Methacrylate | $4.7M | 12.17% | 85.44% | $573K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3906100000 | Polymethyl Methacrylate | $8.9M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
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ImportsExports
Imports
$4.7MYoY · Pro
Exports
$8.9MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Exports · July 2026
destination
Mexico and Canada together take 75% of it.
customs district
origin
entry
rate provision · imports
14.2% enters free of duty; the effective duty rate is 12.17%.