High-Purity Cadmium Sulfide for Semiconductors from Mexico
Ultra-high purity (6N) cadmium sulfide crystals or powder for manufacturing II-VI compound semiconductors like CdS photodetectors. Falls under HTS 2830.90.20.00 as chemically defined cadmium sulfide. Not doped or wafer-formed, qualifying for Chapter 28.
Duty Rate — Mexico → United States
13.1%
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 lot-specific purity certificates; customs may test for semiconductor-grade specs
• Declare end-use as inorganic compound, not electronic component, to prevent shift to Chapter 85
• Comply with Wassenaar Arrangement export controls if high-purity suggests dual-use tech