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HSChapter 40
U.S. imports of halo-isobutene-isoprene rubber (ciir or biir), nesoi (HS 4002390000) totaled $3.2M in June 2026, traded with 10 countries.
Importers of Halo-Isobutene-Isoprene Rubber (ciir or Biir), NESOI paid $111K in duties in June 2026 — an effective duty rate of 13% on $867K in dutiable value, based on actual customs collections rather than the published tariff schedule. Halo-Isobutene-Isoprene Rubber (ciir or Biir), NESOI imports of $3.2M in June 2026 ran 11% below the year-to-date monthly average of $3.6M.
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Monthly import values over time
No geographic breakdown available
U.S. trade for this product is not broken down by state or port in the latest Census Bureau release.