... 20s), Large extrusion density, propeller with special wear-resistant materials, precision casting,life was over ten times more rapid ... rape stalks, peanut plants, sunflower stalks, bamboo sawdust, bagasse , wood chips, rice husk, coffee husk, coir pith, jute sticks, ... groundnut shells, Bamboo, wood, straw dust, Mustard stalk and cotton stalks ,nutshell, coconut ...