U.S. imports of ion-exchangers based on polymers of headings 3901 to 3913, in primary forms, nesoi (HS 3914006000) totaled $31.2M in August 2026, imported from 35 countries.

Importers of Ion-Exchangers Based on Polymers of Headings 3901 to 3913, In Primary Forms, NESOI paid $4.0M in duties in August 2026, an effective tariff rate of 12.96% of the $31.2M imported — duty actually collected as a share of that value, not the published tariff schedule. Ion-Exchangers Based on Polymers of Headings 3901 to 3913, In Primary Forms, NESOI imports of $31.2M in August 2026 ran 13% above the year-to-date monthly average of $27.6M.