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3824.40.20.00/Nano-Clay Concrete Viscosity Modifier/Mexico

Nano-Clay Concrete Viscosity Modifier from Mexico

Dispersed montmorillonite nano-clay platelets used to modify concrete rheology and reduce bleeding/segregation in self-consolidating concrete. Wholly inorganic mineral preparation for HTS 3824.40.20.00. Improves flow without segregation.

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

• Clay mineralogy analysis certificate; dispersion concentration specs; avoid confusion with drilling muds