PVC allocation mix; concentrate feed; PET crystallization of the pre-desiccant drying; series of measures mixed; conical twin-screw extruder; single screw extruder; SRL-Z high-speed mixing unit; desiccant dryer; STG-U Series dryer; ZJF Series plastic powder feeding machine; ZJ series on the feeder; SML series Lengshui Ji; SWP series crusher; SH Series mixer; ZS series shaker; MRK series die temperature control