Float Zone Optical Fiber Preform Grower from Germany
A float zone machine employs zone melting to produce ultra-pure silica rods or boules for optical fiber preforms by floating a molten zone along a polycrystalline rod. It achieves higher purity than Czochralski for low-loss fibers. Falls under HTS 8475.21.00.00 for specialized optical fiber preform production.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include process diagrams showing zone melting for fiber-grade silica to distinguish from semiconductor crystal growers
• Label as 'optical fiber preform equipment' clearly; mislabeling risks reclassification to semiconductor machinery
• Check for dual-use restrictions on high-purity melting tech under export control regulations