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2521.00.00.00/Portland Cement Raw Limestone/Mexico

Portland Cement Raw Limestone from Mexico

Raw limestone chunks from specific geologic formations, crushed to 3-6 inch sizes for grinding into cement raw meal. Meets HTS 2521.00.00.00 as calcareous stone used in cement production. Purity levels ensure proper clinker chemistry ratios.

Duty Rate — Mexico → United States

10%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Obtain ISO-certified lab tests for MgO, Al2O3, and Fe2O3 content to prove cement-grade quality

• Use bills of lading specifying 'cement raw material limestone' to aid customs processing