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<title><![CDATA[EC21 Product Catalogs - sun bathe]]></title>
<link><![CDATA[https://www.ec21.com/ec-market/sun_bathe--0555/1/sun bathe.html]]></link><item>
<title><![CDATA[Optical Brightener 4BK Optical Brightening Agent 4BK Whitening Agent for Cotton Fabric]]></title><link><![CDATA[https://taicangchem.en.ec21.com/Optical_Brightener_4BK_Optical_Brightening--10979101_10979123.html]]></link><description><![CDATA[sun after dissolution.
4. optical brightener 4BK has good fastness to H2O2, so with H2O2 bleaching and fluorescent whitening treatment can be in the same dye bath.
5. optical brightener 4BK is a kind]]></description><pubDate><![CDATA[20240307]]></pubDate></item>

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