... always full of engine oil.Working principle of wood pellet making machine 1.Through the belt conveyor, the materials ... mold and bearings of the molds.Pellet features of wood pellet making machine 1.Pellet is new style energy which is ... cost.2.Pellet (biomass briquette,biomass pellet,wood pellet) is widely used in heating, biomass boiler, household gasification furnace, industrial boiler, hotels, ...