硫化轧

Minor metal is our focus. Minor metal refer to metals which are rare, valuable. They are byproducts of other base metal, so which are also be called smokestack metal. Although they are rare and with complex process, they are also special and valuable, playing in great part in industry covering high-property steel and material, optical material, emerging energy development, car industry, air and space technology, laser material, environment technology, electric industry and so on. Those rare metals changeand shape new technology from basement. The new changes grasp our attention, wh