사양: 

직경(Diameter) : 6~8mm
길이(Length) : ≤32mm
겉보기 밀도(Unit Volume Mass) : ≥600kg/m3
수분(Total Moisture) : ≤10
회분(Ash) : ≤3.0% wt
내구성(Durability) : ≥95.0
순 발열량(Net Calorific Value) : ≥4,000kcal/kg
황(Sulphur) : ≤0.05% wt
염소(Chlorine) : ≤0.05% wt
질소(Nitrogen) : ≤0.7% wt