The pellet mill series includes three kinds of pellet mills, centrifugal pellet mill, flat die pellet mill, ring die pellet mill. The three kinds of pellet mills fit for different raw materials and different demand of customers. We adopt Germany high technic to invent three rollers flat die pellet mill and absorb the elite of foreign technology to invent efficient centrifugal pellet mill. They can press 4-12mm diameter biomass, wood and fertilizer pellets from sawdust, stalk, straw, peanut, sun flower, paper, palm shell or palm fiber, animal manure and do on.