Electronics Sintering Zinc Dust from Mexico
High-fineness zinc dust from vapor process, 86% metallic zinc with spherical particles averaging 10-20 microns (all passing 63-micron), used in electronics for sintering conductive pastes. Meets exact criteria of HTS 7903.10.00.00 subheading note (c) for zinc dust.
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
• Supply SEM images or laser diffraction reports proving spherical morphology and size distribution
• Declare as 'non-pyrophoric' if passivated; active dust requires special UN3077 handling
• For high-tech imports, reference BIS export controls if dual-use concerns arise