... Haisi Extrusion Equipment Co.,Ltd.! 1,Euro-style rectangle barrel achieves smaller temperature difference.2,Innovated design of heater ... are of high quality nitrided steel . 4,Material of screw is high-quality steel 38CrMoALA or W6Mo5Cr4V2.5,Electromagnetic ... 6,Different styles of feeder could be chosen: single screw, twin screw, hollow screw,forced-feeding, side-feeding,liquid-adding system etc. ...