wood pellet machine sawdust,straw,stalk pellets diameter from 2-15mm CE cert pellet machine We invent Germany high ... . They can press 2-15mm diameter biomass ,wood and fertilizer pellets from sawdust,stalk,straw,peanut,sun flower,paper,palm shell or ... mill is our unique China national patent.Becasue,standing out from ring dies and other pellet mills is three rollers, adding ...