... static, roller rotating, materials centrifugal, Evenly distributed around.3.Double-layer dies, up and down dual-use, reduce the ... tube, increasing travel, improving density.6.Ring die,vertical structure,good for cooling the pelletizing room.7. Independent ... roller rotating, material centrifugal and distributed around evenly.3. Double-layer die, multi-function, high efficiency.4. Macroporous die ...