Spinel Polishing Grit from Canada
Synthetic spinel powder used in military optics and satellite lens polishing. Classifies in 7105.90.00.00 as other synthetic semi-precious stone powder.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• ITAR/EAR export controls may apply to defense end-use
• Refractive index certification proves optical gem quality
• Military contract invoices require end-user statements