1.The expandable polystyrene machine PSY70-120 adopts filling,expander,sieving,delumping,and conveying to silos are completed automatically; 2.With primary and secondary expansion device to get density of 8-40g/L; 3.The fluidized bed will be supplied separately according to the user's selection; Note: The machine can be equipped with Screw Conveyor;the photocell controls the material level to realize automatic filling(optional)