High Purity Split Block Mica Flakes from Mexico
High purity split block mica flakes are meticulously split to under 0.508 mm thickness with 0.203 mm uniformity, free of inclusions for sensitive applications. Essential precursor for semiconductor wafer spacing and RF windows. HTS 2525.10.0010 applies to this rifted, unselected crude form.
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
• Include purity assays (>99.9%) and spectrometry reports for high-value declarations
• Use cleanroom packaging to preserve purity claims during transit
• Monitor for radioactive impurities (e.g
• from certain deposits), requiring NRC pre-approval