Float Zone Crystal Grower Inlet Valve from Mexico
Specialized inlet valve for vacuum-sealed float zone crystal growers producing high-purity silicon ingots from polycrystalline rods. HTS 8481.90.9085 covers it as 'other' valve parts for semiconductor crystal growth per statistical note (a)(i). Ensures contamination-free operation.
Duty Rate — Mexico → United States
25%
Rate breakdown
9903.82.0925%Except as provided for in headings 9903.82.16 and 9903.85.68, articles of copper and derivative aluminum and steel articles, as provided for in subdivisions (c)(vi)–(viii) of U.S. note 16 to this subchapter
9903.03.060%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; and semiconductor articles, of any country, as provided in subdivision (aa)(v) of U.S. note 2 to this subchapter
Import Tips
• Submit statistical note references in entry docs to link valve to float zone methods and prevent reclassification
• Test for helium leak rates (<10^-9 atm cc/sec) and document for customs verification