Wafer Polishing Head Vacuum Chuck from Germany
Porous ceramic vacuum chuck that mounts on polishing heads of wafer polishers (8429) to hold semiconductor wafers flat during final CMP preparation for device fabrication. Critical for nanometer flatness. 8431.49.9020.
Duty Rate — Germany → United States
15%
Rate breakdown
9903.82.2215%Derivative steel articles the product of Argentina, Ecuador, El Salvador, Guatemala, Japan, the Republic of Korea, Liechtenstein, Switzerland, Taiwan, the United Kingdom, or a member nation of the European Union, as provided for in subdivision (c)(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
• Specify porosity (10-40%), vacuum level, and wafer size compatibility
• Provide SEM photos of porous structure for material verification
• Solid chucks without vacuum classify differently under 6909