2528.00.00
Natural borates and concentrates thereof (whether or not calcined), but not including borates separated from natural brine; natural boric acid containing not more than 85 percent of H<sub>3</sub>BO<sub>3</sub> calculated on the dry weight
Duty rates
- General (MFN)
- Free
- Column 2 (non-MFN)
- Free
“General” applies to imports from most trading partners under normal trade relations. “Special” lists products eligible for reduced or duty-free treatment under programs like GSP, USMCA, CAFTA-DR, or individual free-trade agreements. “Column 2” applies to imports from countries without normal trade relations (currently Cuba and North Korea).
Chapter 25
Salt; sulfur; earths and stone; plastering materials, lime and cement (Section V — Mineral products)