... sets extrusion line per year and more than 500 sections barrel per month, owns good reputation in clients based on stable quality, timely ... ,ectExhausting 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