... machine, pvc film extruder,film blowing machine PVC heat shrink film blowing machinepvc film blowing machine, pvc film extruder ... towing equipment, cooling equipment, heat expasion devicesm heating syste USAGE This Polyvinyl chloride heat shrink packaging film is characterized by ... hardness, wear resistance, corrosion resistance and other properties.3 using new screw, 1;23 diameter, and suitable for ...