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2523.90.00.00/Natural Cement Clinker Ground/Japan

Natural Cement Clinker Ground from Japan

Ground natural cement from argillaceous limestone kilns provides hydraulic setting like Roman concrete. Under HTS 2523.90.00.00 as other hydraulic cements, separate from synthetic Portland. Used in sustainable historic replication projects.

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

• Include kiln firing certificates showing <900°C temp distinguishing from Portland

• Bulk shipments require dust suppression declarations for port handling