... stalks, rape stalks, peanut plants, sunflower stalks, bamboo sawdust, bagasse , wood chips, rice husk, coffee husk, coir pith, jute sticks, groundnut ... , coconut shell ,etc Working principle:Briquette machine uses a large screw to grind, compress and extrude the biomass into briquettes. The ... will do my best to satisfy you. Thank you ! good quality wood charcoal briquette machine with favorable price