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Home » For Buyers » Selling Leads » Office Supplies » Photographic Equipment & Supply » Others
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Description

Diameter(Dia):+/-0.1mm

Center Thickness(TC):+/-0.2mm

Scratch-dig:20-10 Surface

 Flatness:λ/10 @632.8nm Or λ/10 @632.8nm each inch

 Paralleelism:1 arcmin Clear Aperture:90% of diameter

 Coating:none

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