Alumina Glass Powder for Technical Ceramics from Japan
High-alumina content glass powder for advanced technical ceramics like spark plug insulators. Improves dielectric strength and thermal shock resistance, classified HTS 3207.40.5000 for ceramic industry.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide Al2O3 percentage (>20%) and dielectric specs proving technical ceramic use
• Classify separately from pure alumina ceramics to avoid Chapter 69
• Include end-product examples (insulators, substrates) in import declarations