... ash, the content of ash: 2.6% -3.6 %, calorific value:7600-8600 kcal, moisture content:<6%, the cross section tidy ... ash, the content of ash: 2.6% -3.6 %, calorific value:7200-7600 kcal, moisture content:<6%, the cross section tidy ... Charcoal in Stock(for export) Sawdust Machine-made Charcoal for Insulation Materials