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3824.40.20.00/Nano-Clay Concrete Viscosity Modifier/Japan

Nano-Clay Concrete Viscosity Modifier from Japan

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 — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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Import Tips

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