8431.39.00/Seed Crystal Rotation Mechanism/Mexico

Seed Crystal Rotation Mechanism from Mexico

Motorized mechanism that rotates the seed crystal at precise speeds during Czochralski pulling to ensure uniform boule diameter. Critical part for heading 8428 crystal growers. 8431.39.00 classification.

Duty Rate — Mexico → United States

10%

Rate breakdown

9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
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Import Tips

• RPM/torque specs for 300-500mm boules; vibration isolation certs

• Common issue: motor classified separately under 8501

Seed Crystal Rotation Mechanism from Mexico — Import Duty Rate | HTS 8431.39.00