... metal materials CO.,LTD holds Tantalum ,Niobium as the dominant products in the scope of rare metal new materials, including many sorts and ... crucible:Applications:For rare-earth metallurgy,load plates for the anodes of tantalum and niobium electrotyzing Capacitors and for corrosion resistant ... in this item. please send e-mail to tell me the detail of the prodcutions, I will reply to you as soon as ...