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HSChapter 39
U.S. imports of polymethyl methacrylate (pmma), in primary forms (HS 390610) totaled $3.4M in April 2026, traded with 26 countries.
Importers of Polymethyl Methacrylate (PMMA), in Primary Forms paid $454K in duties in April 2026 — an effective duty rate of 14% on $3.2M in dutiable value, based on actual customs collections rather than the published tariff schedule. Polymethyl Methacrylate (PMMA), in Primary Forms imports of $3.4M in April 2026 ran 14% below the year-to-date monthly average of $4.0M.
Last updated: April 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.
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.
Monthly import values over time
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | $695 | $4.7M | +$4.7M |
| KOREA, SOUTH | $1.2M | $27K | -$1.2M |
| CANADA | $204K | $1.0M | +$830K |
| SINGAPORE | $69K | $732K | +$663K |
| JAPAN | $745K | $27K | -$718K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 3906100000 | POLYMETHYL METHACRYLATE | $3.4M | 14.17% | $454K |
POLYMETHYL METHACRYLATE
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3906100000 | POLYMETHYL METHACRYLATE | $9.7M |
POLYMETHYL METHACRYLATE
2.4M kg
ARTICLES OF PLASTICS, NESOI
HS 392690
FLOOR, WALL, ETC COVERS, VINYL CHLORIDE POLYMERS
HS 391810
TABLEWARE AND KITCHENWARE OF PLASTICS
HS 392410
SACKS & BAGS (INCL CONES) OF POLYMERS OF ETHYLENE
HS 392321
HOUSEHOLD AND TOILET ARTICLES NESOI OF PLASTICS
HS 392490
PLATES, SHEETS ETC, NON-CELL ETC, POLYMER
HS 392010
| State | Imports | Exports | Balance |
|---|---|---|---|
| Texas | $530K | $2.3M | +$1.7M |
| California | $607K | $1.5M | +$872K |
| Pennsylvania | $22K | $2.0M | +$2.0M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LAREDO, TX | -- | $3.3M | +$3.3M |
| LOS ANGELES, CA | $764K | $978K | +$214K |
| HOUSTON, TX | $317K | $491K | +$175K |