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Perlite Aggregate Insulating Ceramic Brick from Japan

Fired solid brick containing expanded perlite for lightweight heat insulation, ideal for passive house construction and cavity walls. HTS 6904.10.0010 applies to these solid building bricks with ceramic fired body and thermal insulating properties per Chapter 69 definitions.

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

1

Provide kiln firing records (>800°C) distinguishing from cured resin products excluded by Chapter notes. 2

Thermal performance documentation essential for 'heat insulating' verification. 3

Ensure dimensions qualify as building bricks, not tiles (<3.2cm thick)