</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

Calcined Dolomite Filler for Polymer Composites from Japan

Micronized calcined dolomite used as functional filler in polypropylene and PVC compounds for improved stiffness. Classified 2518.20.00.00 as processed mineral powder, prior to plastics incorporation.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

Import Tips

D50 particle size analysis confirms filler grade vs coarse aggregates

Surface treatment certificates if stearate-coated to avoid 3824 classification

Bulk density tests distinguish from built-up mica splittings