... smooth and flawless, no explode, fire quickly, burning time: 4-5 hours, easy deliming, white ash, the content of ash: 2 ... charcoal knock charcoal, good hardness, specific gravity:1.3-1.5, length:10-35 cm, diameter: 3.6 -3.8 cm, the ... :1.1-1.2, length:8-35 cm, diameter: 3.5 -3.9 cm, the fixed carbon of charcoal: 90%.Rods ...