Kieselguhr Catalyst Support Brick from Japan
Ceramic brick from kieselguhr used as inert support for chemical catalysts in reactors. Falls under HTS 6901.00.00.00 for ceramic goods of siliceous fossil meals.
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
• Provide chemical inertness certificates for catalyst bed applications
• Declare industrial end-use to avoid consumer article shifts
• Test for >95% silica content from fossil sources