Semiconductor-Grade Fused Quartz Blank from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, 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