<![CDATA[EC21 Product Catalogs - nitrided screw barrel]]> <![CDATA[Twin-screw PVC Pelletizing Extruder]]> <![CDATA[Extruder XJW75X12D, XJD150X16D, XJ-250, SJ92/188]]> <![CDATA[Haitian HTF-360 MA/SA Series Screw Barrel]]>