U.S. imports of Ash and Slag, Including Seaweed Ash (Kelp), Not Elsewhere Specified or Included (HS 2621900000) totaled $3.0M in August 2026, imported from 15 countries.

Importers of Ash and Slag, Including Seaweed Ash (Kelp), Not Elsewhere Specified or Included paid $139K in duties in August 2026, an average duty rate of 4.69% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Ash and Slag, Including Seaweed Ash (Kelp), Not Elsewhere Specified or Included imports of $3.0M in August 2026 ran 26% above the year-to-date monthly average of $2.4M.