They are fuel pellets with a diameter of 6-8 mm obtained by drying wood residues, grinding and turning into sawdust, and then compressing them with high pressure. Wood pellet contains about 7-12% moisture. Since the moisture content is low, its calorie is higher than firewood. High quality pellets should be dry (humidity rate below 10%), hard and durable, low ash content after burning and should not exceed 1-2%. Compared to other solid fuels, the ash ratio is 20% in coal and 0.5% in pellets.
