... CHARACTERISTIC1. Main motor and traction motor Pioneer® frequency inverter controller.2. Material of screw and barrel: 38CrMoAlA after nitrogen treatment, ... , hard chrome- plating 5. Double digital display temperature controller in the die head6. rotaty die head 360oC rotating. ... :1). Temperature of screw automatically controlled ( 4 zones)2). Independent switches controls including amp, rpm and m/min ...