... Biofuels can replace wood, coal, liquefied natural gas, are widely used for life heating furnace stove, hot water boiler, indust Raw ... , leaves, industry waste. After crushing and pressing, it can be used as fuel with high energy.What is straw charcoal?A green ... straw charcoal)can replace firewood, raw coal, liquefied gas, widely used in family stove, warming stove, hot-water boiler, industrial boiler ...