Chalk Filler for Cement Production from Canada
Ground natural chalk used as a functional filler in Portland cement manufacturing to adjust composition. Falls under HTS 2509.00.20.00 as industrial 'other' chalk, not a finished construction product.
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
• Certify as raw material not mixed with other minerals to stay in 2509; comply with cement import quotas if blended; test for reactivity to distinguish from limestone