Heat-Treated Marble Chips 5-10mm from Canada
Thermal-processed marble chips 5-10mm for enhanced durability in road base and concrete. Marble from heading 2516 subjected to heat-treatment per heading terms. Classified 2517.41.00.00 including heat-treated forms.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Include heat-treatment process certification and temperature logs
• Verify no chemical binders added post-heat to maintain stone classification
• Size grading reports essential for granules vs powder distinction