1.twin screw extruder,double screw extruder for pet food,snacks,soya protein ... 500kg/h,500-800kg/h,800-1000kg/hTwin screw extruder/double screw extruder can produce various fallow foods, snacks, core ... life: with special material and technology, the screw and nut involved can work continuously for one ... extruded in the sealed charging barrel by making use of the engaged twin screws, at the same time ...