7019.90.51/Quartz Fiber Continuous Yarn/Japan

Quartz Fiber Continuous Yarn from Japan

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 — 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%

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Import Tips

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