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%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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