Specifications: Origin: Vietnam. Shape: Cylinder. Pillow. Hexagon. Material: 95% Coconut shell charcoal, 5% botanical adhesive. Calorific value: 6000-7000 kcal/kg. Fixed Carbon content: 70-80%. Moisture: 8% max. Volatile: 17% max. Ash: 6% max. Storage: In dry environment, avoiding high Moisture and no strong impact.