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<title><![CDATA[EC21 Product Catalogs - pp sheet welding machine]]></title>
<link><![CDATA[https://www.ec21.com/ec-market/pp_sheet_welding_machine--330817/1/pp sheet welding machine.html]]></link><item>
<title><![CDATA[PP Square Ventilation Duct]]></title><link><![CDATA[https://xichenghuanbao.en.ec21.com/PP_Square_Ventilation_Duct--11430858_11431513.html]]></link><description><![CDATA[PP circular duct. The square PP air duct is made of PP sheet through a bending machine, four times of 90-degree elbows, and then hot-melt welding. There are many processes. Compared with square pipes]]></description><pubDate><![CDATA[20210818]]></pubDate></item>

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