... 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 ... firewood, 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