Crystal Boule Grinder
Crystal boule grinders precisely grind semiconductor crystal boules to exact diameters and flats indicating conductivity and resistivity, preparing for wafer slicing. Under HTS 8443.99.5050 as other parts/accessories for printing machinery in semiconductor wafer prep per statistical notes. Essential for dimensional accuracy in wafer production.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If used for general metalworking rather than semiconductor boules
Grinding machines for metal shift to Chapter 84 heading 8460 without semiconductor specificity.
If dedicated semiconductor wafer preparation line
Wafer prep equipment explicitly directed to 8486 by statistical provisions.
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Import Tips & Compliance
• Provide wafer fab qualification specs; CBP often requires proof of <1 micron tolerance capability
• Avoid bulk packaging classification; ship in cleanroom-ready containers
Related Products under HTS 8443.99.50.50
Colloidal Silica Wafer Polisher
Polishers using colloidal silica slurry for final semiconductor wafer surface preparation. HTS 8443.99.5050 for wafer polishers per statistical notes. Creates oxide layer for device processing.
Czochralski Crystal Puller
A Czochralski crystal puller is specialized equipment used to produce extremely pure monocrystalline semiconductor boules from silicon or gallium arsenide melts, from which wafers are sliced. It falls under HTS 8443.99.5050 as 'other' parts and accessories for printing machinery adapted for semiconductor processing, specifically in wafer manufacturing per statistical notes. This machine employs the Czochralski method for crystal growth essential to semiconductor production.
Single-Side Wafer Polisher
Single-side wafer polishers create mirror-finish surfaces on semiconductor wafers using colloidal silica slurry for device fabrication readiness. Falls under HTS 8443.99.5050 as printing machinery parts for wafer polishing per statistical note (a)(ii)(C). Achieves sub-nanometer surface roughness.
Crystal Ingot Diameter Grinder
Precision grinders that shape crystal ingots to uniform diameter tolerances before wafer slicing, with automated profiling for resistivity flat marking. HTS 8443.99.5050 as other semiconductor wafer prep accessories per statistical notes. Maintains crystal orientation throughout process.
Multi-Wire Wafer Slicing Saw
Multi-wire saws use diamond-impregnated wires to simultaneously slice hundreds of wafers from semiconductor boules, minimizing material loss. Classified in HTS 8443.99.5050 as printing parts for wafer manufacturing per statistical note (a)(ii)(B). Enables high-volume 300mm wafer production.
Double-Side Wafer Grinder
Double-side grinders simultaneously process both wafer surfaces for thickness uniformity and parallelism prior to polishing. Under HTS 8443.99.5050 for semiconductor wafer grinding per statistical note (a)(ii)(C). Achieves <1 micron TTV across 300mm wafers.