6902.20
Containing by weight more than 50 percent of alumina (Al<sub>2</sub>O<sub>3</sub>), of silica (SiO<sub>2</sub>) or of a mixture or compound of these products:
Duty rates
“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 69
Ceramic products (Section XIII — Articles of stone, ceramic, glass)