Wafer Polishing Slurry Distribution Ring
Precision-machined ring that evenly distributes chemical slurry across wafer polishers in semiconductor wafer preparation lines. Classified HTS 8431.49.10.80 as component of heading 8426 polishers critical for wafer flatness.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If primarily fluid handling function
Distribution rings emphasizing slurry flow control may classify under filtering/purifying machinery parts.
If plastic rather than metal construction
Polymer distribution rings fall under other plastic articles when material predominates.
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Import Tips & Compliance
• Certify material compatibility with CMP slurries (no copper contamination); declare hole pattern specs; ensure cleanroom packaging
Related Products under HTS 8431.49.10.80
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Diamond-embedded conditioning ring used to dress lapping plates in simultaneous double-side wafer lappers. Under HTS 8431.49.10.80 as part of heading 8426 semiconductor lapping equipment.
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Wafer Lapping Machine Carrier Plate
Thin stainless steel carrier holding individual wafers between lapping plates during simultaneous thickness reduction. Classified under HTS 8431.49.10.80 as part of heading 8426 semiconductor lapping equipment.