Semiconductor Wafer Polishing Head
Carrier head assembly for chemical-mechanical polishing (CMP) platens preparing wafer surfaces for device fabrication, per statistical note wafer polishers. HTS 8431.49.90.94 as part for heading 8430 polishing machines in semiconductor processing.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If designed for wafer lifting/handling in cleanrooms
Lift/handling parts for fab equipment classify under heading 8428.
If with integrated endpoint detection sensors
Polishing heads with measuring functions move to Chapter 90 testing apparatus.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide CMP process datasheets linking to statistical note polishers; declare pad pressure specs; common error: confusing with heading 8428 lifting gear heads
Related Products under HTS 8431.49.90.94
CMP Polisher Retaining Ring
Consumable retaining ring holding wafers in place during chemical-mechanical polishing for semiconductor devices.
Crystal Puller Seed Chuck Holder
Holder for seed crystal in Czochralski pullers initiating boule growth for semiconductor wafers.
Wafer Grinder Air Bearing
Air bearing spindle support for vibration-free grinding of semiconductor wafers.
Float Zone Puller Vacuum Chamber Lid
Sealable lid for vacuum chamber in float zone semiconductor crystal growth furnaces.
Czochralski Crystal Puller Furnace Chamber
The furnace chamber is a critical replaceable part for Czochralski crystal growers used in semiconductor wafer manufacturing, containing the high-temperature environment for pulling monocrystalline silicon boules. It falls under HTS 8431.49.90.94 as a part solely for machinery of heading 8429 (industrial ovens and furnaces). This statistical note component ensures precise crystal growth per semiconductor processing standards.
Float Zone Crystal Grower RF Heating Coil
RF heating coil used in float zone crystal pullers to melt and zone-refine semiconductor boules like silicon for ultra-pure wafers. Classified under HTS 8431.49.90.94 as a principal part for heading 8429 crystal growth furnaces in semiconductor manufacturing.