... After crushing and pressing, it can be used as fuel with high energy.What is straw charcoal?A green ... fuel with high energy, which raw material is straw, stalk, ... , raw coal, liquefied gas, widely used in family stove, warming stove, hot-water boiler, industrial boiler, biomass electric factory. ... value):3500-5500 kilocalorie Briquette Machine for Straw Fuel