... -3-4 series Taper-shape rollers and flat die pellet mills, which are specially fit for biomass, fertilizer ... international demand of renwable compression biomass energy market. The pellet machine are our national patent products, patent No: ... fit for different pressure ratio materials, ensuring the pellet density.Body of rollers are large and groove is ... 320Φ4.5-12193800×1700×4200 Flat Die Pellet Mill