... 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, bark, industry waste, ect, crushed ... raw stalk2. High density, it is 10-15 times to raw stalk in weight, density: 0.8-1 ... replace firewood, raw coal, liquefied gas, widely used in family stove, warming stove, hot-water boiler, industrial ...