... barrel introduction:By means of the replaceable screw barrel sections, the processing ... agent and other auxiliary agents:combustion-supporting machine pelletsPP,PE ... and VolatilizationPolystyrene oxide,high-absorbing resin,chlorine sulphur polyethylenePowder paintPolyester,ring oxide,lactide,polyurethane,acrylateCERTIFICATION:Extruder screw elements co-rotating twin screw extruder screw and barrel ...