... furnace, hot water boiler, drying stove, industrial boiler,and straw charcoal is the lastest environmental protective, clean,renewable fuel. ... press machine can evenly press various corn straw, rice husk, wheat straw, wheat shell, bean straw,cooton stalk, medical slag, branches, ... into fuel. Technical data: Output shapes: Advantages of straw charcoal:Increase the net calorific value per unit volume ...