... belt conveyor, metal detector, cutting compactor, single-screw extruder, hydraulic screen changer, pelletizer, vibration sieve, vertical dewatering machine,blowing system ... . 3), Single screw extruder: 38CrMoAlA with nitriding processing.4), Hydraulic screen changer: two types for choice---plate screen changer and ... controller, Siemens contactor 1 set high quality granulator from china manufacturer