Place of Origin : Central Java Material : Coconut Shell Type : Premium Charcoal Below is Our Specfication for Coconut Shell Charcoal Product : Premium Charcoal Origin : Indonesia Calories : 7.100 cal Fixwd Carbon : 70% - 80% on dry basis Sulfur : 0.04% - 0.15% Humidity : 4% Type of Cuts : Cube 25mmx25mm (As your request) Ash Content : 2.5% - 3%