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For anthracite: index, ash content (A) 12%, the volatile part (V) 12%, sulfur (s) 0.8%, the total moisture (mt) 10%, hartz grindability index (at HGI) 50, low calorific value (27.5 MJ/kg), particle size 25 mm, including 25 mm less than 10%, dry base fixed carbon 75%, shall not be mixed with gangue, wood and other sundry. This coal is used in blast furnaces.What is the MOQ?