Float Zone Crystal Grower from Japan
Centrifugal apparatus employing float zone method to purify and grow semiconductor crystals like silicon by melting a narrow zone and progressively moving it along the boule. Classified in HTS 8421.29.0065 for its liquid zone purifying function in semiconductor wafer production.
Duty Rate — Japan → United States
15%
Rate breakdown
9903.82.1015%Except as provided for in headings 9903.82.12, 9903.82.17 and 9903.85.68, derivative aluminum and steel articles with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 15 percent, as provided for in subdivision (f) of U.S. note 16 to this subchapter
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Provide float zone process diagrams and impurity reduction specs to substantiate semiconductor classification
• Label as 'semiconductor crystal grower' to distinguish from general liquid filters
• Watch for reclassification if equipment handles non-semiconductor melts