... bags, and other civil and industrial packing. SJ-A50,55,60,65 High Speed Blowing Film MachineUse characteristicsThe unit ... extruder, barrel, screw adopt high-quality steel, nitride ... bags, vests bags, and other civil and industrial packaging.OPTIONAL EQUIPMENT1AUTO LOADER 2)CAST ALUM HEATER ... .8*6.5m HDPE High speed Film Blowing Machine