Optical Preform Grinder from Canada
Precision grinder shapes ends of optical fiber preforms to exact geometry for fiber drawing process, with diamond tooling for silica glass. Maintains flatness critical for draw quality. Classified HTS 8475.21.00.00.
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
• Diamond wheel specifications and coolant system details
• Flatness tolerance documentation (<1 micron)
• Distinguish from general glass grinding (8205)