Features:Clean and environmental protectionNo additives, no chemical, no harm for human beingsIgnites quickly and quietlyHigh burning efficiency, low ashOrigin: VietnamTechnical Specification:Calorific value: 4600kcal/kgAsh content: 1.3% maxLength: 10mm to 50mmDiameter: 6mm to 8mmPayment: T/T or L/CDensity: 1700kg/m3If you are interested in our product, pls feel free to contact me, I will reply immediately.Thanks and Best Regards,