Semiconductor-Grade Fused Quartz Blank from Mexico
Large blanks of semiconductor-grade fused quartz in mass form for wafer carriers and diffusion tubes. HTS 7001.00.10.00 as it's glass in the mass of fused silica before machining.
Duty Rate — Mexico → United States
10%
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
• ITAR/EAR screening mandatory; fused quartz blanks often dual-use for defense tech
• Specify metallic impurity levels (<1ppb); customs may sample for classification
• Temperature-controlled shipping; declare thermal expansion coefficient