Czochralski Crystal Puller Nozzle Assembly from Mexico
This nozzle assembly is a precision-engineered part used in Czochralski crystal growers for directing the flow of molten silicon during monocrystalline boule formation in semiconductor manufacturing. It falls under HTS 8424.90.9080 as a part of a mechanical appliance for projecting liquids (molten semiconductor material). Classified here due to its role in jet projecting high-temperature liquids in crystal growth equipment.
Duty Rate — Mexico → United States
25%
Rate breakdown
9903.82.0925%Except as provided for in headings 9903.82.16, 9903.82.20–9903.82.26 and 9903.85.68, articles of copper and derivative aluminum and steel articles, as provided for in subdivisions (c)(vi)–(viii) and (xi) of U.S. note 16 to this subchapter
9903.05.900%Articles of aluminum, of steel or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; patented pharmaceutical articles; and semiconductor articles, as provided in subdivision (f) of U.S. note 52 to this subchapter
Import Tips
• Obtain manufacturer's declaration confirming use in semiconductor crystal growth to support classification; ensure documentation specifies material compatibility with molten silicon; watch for reclassification if sold as complete grower unit