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U.S. exports of polycarbonates, primary forms (HS 390740) totaled $74.6M in July 2026.
Importers of Polycarbonates, Primary Forms paid $3.2M in duties in July 2026 — an effective duty rate of 14% on $23.2M in dutiable value, based on actual customs collections rather than the published tariff schedule. Polycarbonates, Primary Forms imports of $33.7M in July 2026 ran 10% above the year-to-date monthly average of $30.5M.
Last updated: July 2026 dataPolycarbonates are high-performance engineering thermoplastics valued for optical clarity, impact resistance, and heat tolerance, making them essential in automotive glazing, optical media, electronic housings, and medical devices. South Korea is the dominant US import source, with Canada and Mexico also supplying meaningful volumes—the latter two benefiting from USMCA proximity. Classified under a single 10-digit line (3907400000), polycarbonate resin grades vary by melt flow index and molecular weight, and specification mismatches can cause processing problems downstream. Importers should also be aware that polycarbonate from certain Asian origins may carry Section 301 exposure depending on the supply chain.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
885 shipments/mo
MFI is a critical commercial specification—low-MFI grades suit structural and glazing applications while high-MFI grades are used for thin-wall injection molding. MFI is not a classification criterion under HTS 3907.40, so it need not be declared on the entry, but it should be specified in purchase contracts and technical documentation to ensure the correct grade is delivered and to support any quality disputes.
Polycarbonate originating in Canada or Mexico may qualify for USMCA preferential tariff treatment if it meets the applicable rules of origin, including any required tariff shift or regional value content threshold. Importers must obtain a valid certification of origin from the producer or exporter and retain it for five years to support the preference claim.
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Subheading 5 of 11 in heading 3907
Subheading 390740 · $33.7M of $380.4M
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 |
|---|---|---|---|---|---|
| 3907400000 | Polycarbonates | $33.5M | 10.23% | 69.25% | $3.4M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3907400000 | Polycarbonates | $64.0M |
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.
ImportsExports
Imports
$33.7MYoY · Pro
Exports
$74.6MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Exports · July 2026
destination
Mexico and Canada together take 79% of it.
customs district
origin
entry
rate provision · imports
30.2% enters free of duty; the effective duty rate is 9.46%.