6810.11.00/Cement Sandwich Building Blocks/Japan

Cement Sandwich Building Blocks from Japan

Sandwich blocks with a concrete core and insulating foam layers bonded by cement, used for energy-efficient walls. Classified in HTS 6810.11.00 as composite concrete building blocks.

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

• Specify insulation material in docs; foam content under 20% keeps it as concrete block

• Comply with building insulation standards like R-value declarations

• Avoid classifying as 'prefab panels' to stay in blocks category