... materials 2.Operate easily 3.Low investment Our machine can making raw materials into pellets :The biomass particles ... , peanut shell, grass, weeds,) forest (trees, bark, wood roots , wood shaving, leaves, bamboo powder, sawdust ) and other waste as ... diameter of wood pellet is 6--32mm. The wood pellet machine can provide fuel materials for biomass burners . environmental wood pellet machine for boilers