Silicon-29 Wafer Blank from Mexico
>- Silicon-29 wafer blanks are single crystal silicon wafers enriched with the stable isotope silicon-29, used in quantum computing research. As an isotope of a non-radioactive element, it falls under heading 28.45. However, Note 8 to Chapter 28 states that doped chemical elements in disc, wafer, or similar forms are classified in heading 38.18.
Duty Rate — Mexico → Canada
0%
Import Tips
• >- Determine whether the wafer is doped for use in electronics; if so, it falls under heading 38.18
• Provide a certificate of analysis showing the isotopic enrichment and doping level
• If the wafer is unworked (rod or cylinder form), it may be classified under 28.45