Diamond Turning Optical Blank from Mexico
Precision-ground optical blank of germanium or ZnS prepared for single-point diamond turning into aspheres. HTS 9001.90.90.00 as unmounted optical substrate. Used in prototype IR optics manufacturing.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Surface roughness (rms <50nm) and figure error specs pre-turning
• Material certificates trace to optical-grade melts
• Prototype status may qualify duty relief programs