As we all know, the pellet machine is divided into two series - flat die series and ring die series. You should be familiar with the ring die series, because many feed companies at home and abroad use the ring die machine for granulation. The raw materials for feed are concentrates, such as corn, soybean meal, cotton meal, etc., with high adhesion rate, and equipped with a steam conditioner before granulation, which can soften and mature the material in advance, so as to better granulate, and increase the gloss of the particles. However, coarse fibers such as straw and sawdust have a low adhesion rate.