... controlled 2.reduction of tungsten,molybdenum,iron, copper ... tungsten bar, tungsten plate, tungsten electrode, molybdenum electrode, molybdenum, molybdenum plate, molybdenum piercing, tungsten carbide powder, sintering of silicon carbide ... products and so on. 2. Company Zhengzhou Songshan Industry Kilns &furnaces Co., Ltd. specializes in the design ...