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Polymer-Based Non-Refractory Mortar Mix from Japan

A ready-to-use mortar mix containing polymer additives and fine aggregates, designed for construction applications like bricklaying and plastering where high adhesion is needed. It falls under HTS 3824.50.0050 as a non-refractory mortar not elsewhere specified, consisting of chemical preparations from the chemical industries. This classification applies to pre-mixed formulations without refractory properties.

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%

Import Tips

Verify composition meets non-refractory standards; refractory materials shift to 3816

Include safety data sheets (SDS) and test reports for VOC content to comply with EPA regulations

Avoid misclassification as ready-mixed concrete (3824.50.5050) by specifying dry powder form