... pellet, animal feed pellet and fertilizer pellets , raw biomass materials can be waste from sawdust, rice husk, agricultural stalk, straw, ... ect ,animal feed materials can be grain, soybean, maize ect, fertilizer materials can be animal manure and so on . the last pellet length ... fuel and make animal feed, fertilizer pellets for farm use. the engine can be installed by both electric motor or diesel or ...