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<title><![CDATA[EC21 Product Catalogs - marble chalk]]></title>
<link><![CDATA[https://www.ec21.com/ec-market/marble_chalk--054203/1/marble chalk.html]]></link><item>
<title><![CDATA[Calcium Carbonate]]></title><link><![CDATA[https://huayuanmica.en.ec21.com/Calcium_Carbonate--10567794_10567900.html]]></link><description><![CDATA[chalk, marble and travertine.
Physical Property 
Typical aspect ratio
3
Specific gravity(g/cm3)
2.7
Refractive index
1.6
PH
8-9
Mohs hardness
3-4
Specification 
100mesh, 200mesh, 325mesh, 400mesh, 60]]></description><pubDate><![CDATA[20230626]]></pubDate></item>

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