15x15 20x20 25x25 30x30 40x40 50mm single crystal SEM silicon wafer AFM optical biological carrier coating experiment substrate

15x15 20x20 25x25 30x30 40x40 50mm single crystal SEM silicon wafer AFM optical biological carrier coating experiment substrate
sku: 1005008642156418
$16.58
Shipping from: China
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