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HSChapter 39
U.S. imports of nonplasticized pvc polymer mixtures in primary forms (HS 390421) totaled $2.4M in April 2026, traded with 16 countries.
Last updated: April 2026 dataNonplasticized PVC compounds — PVC mixed with stabilizers, lubricants, or other non-plasticizer additives but without flexible plasticizers — serve rigid-end applications such as window profiles, pipe fittings, and rigid sheet. The single US tariff line 3904210000 captures all such formulations. Canada and the Netherlands are leading suppliers, the latter reflecting European specialty compound producers with established US distribution. The absence of plasticizers is the defining technical and classification criterion separating this subheading from plasticized PVC under 3904.22.
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The importer should obtain a supplier-issued technical data sheet or certificate of analysis confirming the absence of plasticizers (e.g., phthalates, adipates, or trimellitates) in the formulation. CBP may request this documentation during a CF-28 inquiry or audit. If the compound contains any plasticizer, even at low levels, reclassification under 3904.22 may be required.
Yes — both dry-blend powders and compounded pellets can classify under 3904.21 provided neither contains plasticizers and both are in primary forms as defined by Chapter 39. The physical presentation (powder vs. pellet) does not alter the heading, though it may affect the applicable specific tariff line if the schedule further subdivides by form.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CANADA | $1.3M | $5.2M | +$3.9M |
| MEXICO | $96K | $5.1M | +$5.0M |
| COSTA RICA | $386K | $5K | -$381K |
| NETHERLANDS | $367K | -- | -$367K |
| GUYANA | -- | $238K | +$238K |