... standard: smokeless, non-toxic, tasteless, surface looks smooth and flawless. Machine-made CharcoalExport Grade-A charcoal quality standard: smokeless, non-toxic, tasteless ... explode, fire quickly, burning time: 4-5 hours, easy deliming, white ash, the content of ash: 2.6% -3.6 %, calorific ... explode, fire quickly, burning time: 3-4 hours, easy deliming, white ash, the content of ash: 2.6% -3.6 %, ...