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7019.90.51/Quartz Fiber Continuous Yarn/Mexico

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%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Provide purity certificates >99.9% SiO2; declare maximum service temperature; differentiate from synthetic silica products