Crystal Boule Grinder
Precision grinder for shaping semiconductor crystal boules to exact wafer diameters (150mm-450mm), including flat grinding for conductivity indication. HTS 8448.20.50.90 classification as auxiliary for heading 8444 crystal pullers.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for non-semiconductor crystal grinding
General grinding machines classify under 8460, semiconductor-specific under 8448 auxiliaries.
If imported as grinding wheels only
Interchangeable grinding tools classify under Chapter 82 tooling provisions.
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Import Tips & Compliance
• Include boule diameter range and flat positioning specifications in import documentation
• Provide statistical note reference confirming boule preparation function
• Ensure classification distinguishes from general metallurgical grinders
Related Products under HTS 8448.20.50.90
Crystal Puller for Silicon Wafer Production
A Czochralski crystal puller used to grow monocrystalline silicon boules from which semiconductor wafers are sliced, classified under HTS 8448.20.50.90 as auxiliary machinery for machines of heading 8444 used in semiconductor material processing. It precisely controls pulling speed and temperature for pure crystal formation.
Wafer Slicing Diamond Saw
Precision diamond wire saw for slicing semiconductor wafers from silicon boules, functioning as auxiliary equipment for crystal growing machines of heading 8444. Falls under HTS 8448.20.50.90 as parts suitable solely for wafer preparation in semiconductor manufacturing.
Semiconductor Wafer Grinder
Automatic wafer grinder that processes sliced wafers to precise diameter and flatness specifications for semiconductor fabrication, classified as auxiliary machinery under HTS 8448.20.50.90 for heading 8444 equipment. Critical for achieving wafer tolerances of ±1 micron.
Wafer Lapping Machine
Double-sided lapping equipment that achieves semiconductor wafer flatness within 0.5 microns for fabrication readiness, serving as auxiliary machinery for heading 8444 wafer processing lines under HTS 8448.20.50.90.
Semiconductor Wafer Polisher
Chemical mechanical planarization (CMP) polisher for final semiconductor wafer surface preparation, achieving sub-nanometer roughness. Classified HTS 8448.20.50.90 as auxiliary for heading 8444 wafer fabrication preparation equipment.
Float Zone Crystal Furnace Auxiliary
RF power supply and zone control system auxiliary for float zone silicon crystal growth machines of heading 8444. HTS 8448.20.50.90 as parts suitable principally for semiconductor boule production equipment.