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<title><![CDATA[EC21 Product Catalogs - si crystal]]></title>
<link><![CDATA[https://www.ec21.com/ec-market/si_crystal--271307/1/si crystal.html]]></link><item>
<title><![CDATA[Aspherical Lens]]></title><link><![CDATA[https://opticreate.en.ec21.com/Aspherical_Lens--11182311_11210028.html]]></link><description><![CDATA[crystal materials such as Ge, ZnS and ZnSe ect., the diameter could meet 300mm.
Material
Ge, Si,ZnS,ZnSe,BK7 ect.
Diameter tolerance
+0.0/-0.05mm
Diameter
D5mm-D300mm 
Focal length tolerance
±2%
Cen]]></description><pubDate><![CDATA[20240710]]></pubDate></item>

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