... 2.Biomass pellet machine. Specifications of Sawdust Pellet Mills with High-efficiency ,2011 Hot Sell :1.Double-layer dies ... ;4.Suitable for hard materials. Advantages Sawdust Pellet Mills with High-efficiency ,2011 Hot Sell :Die vertical die ,feeding ... vertically ,No arching of raw materials, easy for heating dissipation.fixed , rollers rotating ,materials centrifugal, evenly distributed around.Double- ...