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<title><![CDATA[EC21 Product Catalogs - freqency]]></title>
<link><![CDATA[https://www.ec21.com/ec-market/freqency--1005/1/freqency.html]]></link><item>
<title><![CDATA[Custom Sapphire Windows, Sapphire Parts]]></title><link><![CDATA[https://walthysales320.en.ec21.com/Custom_Sapphire_Windows_Sapphire_Parts--10959699_11410423.html]]></link><description><![CDATA[Freqency. It also has great abrasion and corrosion resistance, low thermal expansion and excellent mechnical properties.
As a result, a Sapphire Window will exceed other optical materials like quartz]]></description><pubDate><![CDATA[20250202]]></pubDate></item>

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