Quartz Fiber Continuous Yarn from Mexico
High-purity quartz fiber yarn for extreme temperature aerospace applications. Included in HTS 7019.90.51 per Chapter 70 note defining 'glass' to include fused quartz/silica. Purity exceeds 99.9% SiO2.
Duty Rate — Mexico → United States
14.3%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide purity certificates >99.9% SiO2; declare maximum service temperature; differentiate from synthetic silica products