Diatomaceous Earth Ceramic Insulating Brick from Japan
Solid fired brick incorporating diatomaceous earth for high-temperature insulation in building envelopes. HTS 6904.10.0010 classification for heat insulating solid ceramic building bricks per fired ceramic 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
• Laboratory analysis confirming inorganic nonmetallic fired composition required. 2
• Avoid common pitfall of declaring as mineral substances (25). 3
• Thickness documentation critical to exclude tile provisions