... , low price IntroductionStraw briquette press machine can produce biomass charcoal which can replace wood briquettes, coal, natral gas, ... hot water boiler, drying stove, industrial boiler,and straw charcoal is the lastest environmental protective, clean,renewable fuel. Raw ... fuel. Technical data: Output shapes: Advantages of straw charcoal:Increase the net calorific value per unit volume after biomass ...