... to suit different material. Screw component made of high speed & wear-resisting steel.>Barrel:By means of the replaceable screw barrel sections, the processing sections ... VolatilizationPolystyrene oxide,high-absorbing resin,chlorine sulphur polyethylenePowder paintPolyester,ring oxide,lactide,polyurethane,acrylateMeizlon parallel co-rotating twin screw plastic extruder machine quality certification ...