... ISO9001:2008 Production Name: wpc extruder SJZ series conical double-screw plastic extruders are special equipments which can extrude and ... mold by using various kinds of PVC powders. Equipped with ... . The whole line include ,Plastic powder charger,SJZ conical twin screw extruder,mould,vacuum calibration table,haul-off,cutter,stacker. ...