... no dust, no smoke, smoke can be recyled 2.long burning time, high carbon content Carbon Bar Furnace and Charcoal Oven ... of the product:The product we produce is characterized by long burnig time, high carbon content, great heat productivity, little ash ... C) volume(cube)moisture(%) carbon content(%) ash content(%) buring time(min/kg) heat productivity(calorie/kg) volatile matter(%) burning temperature ...