Biofuels can replace wood, coal, liquefied natural gas, are widely used for life heating furnace stove, hot water boiler, indust Raw metrical: crop like saw dust, corn stalk, wheat stalk, cotton stalk, rice straw, rice husk, peanut shell, corncob, bark, leaves, industry waste. After crushing and pressing, it can be used as fuel with high energy.What is straw charcoal?A green fuel with high energy ...