... standard: smokeless, non-toxic, tasteless, surface looks smooth and flawless. Machine-made CharcoalExport Grade-A charcoal quality standard: smokeless, non-toxic ... , the content of ash: 2.6% -3.6 %, calorific value:7600-8600 kcal, moisture content:<6%, the cross section tidy, a ... content of ash: 2.6% -3.6 %, calorific value:7200-7600 kcal, moisture content:<6%, the cross section tidy, a little ...