Black charcoal - raw material: 100% natural hard wood of litchi/longan/eucalyptus … or other natural hard wood. - shape: rod, stick - diameter: 3-12 cm (style: 3-5cm ~ 50%; 6-15cm ~ 50%) - length: 5-30 cm - ash content: ~3% - moisture content: max 5% - fixed carbon content: 68-70% - calorific value: 6800-7000 kcal/kg. - burning time: 2.5-3 hours without sparks. White charcoal -raw material: 100% natural hard wood of litchi/longan/eucalyptus/chestnut … or other natural hard wood. - shape: rod, stick. In carton box with inner plastic bag or as per buyer request