... long working life, wear resistance PET bottle blown machinery screwbarrel/screwbarrel for blowing bottle/single screw and barrel for PET ... of Nitration:≤Two classMaterial Application1)General Plastics2)ABS,PA,PC,PE,PET,PP,PS,EVA,PU,PVC,U-PVC,etc3)PA ... parts for plastic extruders and injection molding machine,they affect the machine performance and quality directly,therefore,QunYing established ...