This customer buys slag from a steel factory. This factory uses electric furnace to produce steel bars. They has 2 million tons slag every years. My customer gather the slag and process the slag. They want to use dry method to extract out metallic steel. Our company make a solution, provide the equipment ,as well as the installing service. Now the plant is into opeartion. It runs quite good. The purity of recovered steel particles can be over 75%. The steel powder can be over 55%.