Chain Sprocket for Wafer Polishing Equipment from Canada
Industrial chain sprocket driving the polishing pad carrier in double-side wafer polishers, achieving mirror-finish surfaces for semiconductor device fabrication. Essential transmission element per statistical note (a)(ii)(C).
Duty Rate — Canada → United States
27.8%
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
• Document polishing pad rotation speeds and surface roughness targets (Ra < 1Å)
• Include cleanroom certification (ISO 3 or better) for polishing environment
• Distinguish from general conveyor sprockets (8431.39)