Single screw extruder machine have a wide range of puff snacks with different formulations can be obtained;The use of a continuous automatic process provides greater production outputs than offered by traditional systems, with savings in energy and reduced management cost;Automatic dosing unit for utilization with any type of flours and starches (size should be 60-80mesh);The screws are made by 38CrMoAIA with the hardness of 55hrc, which is hard and strong;