... metal materials CO.,LTD holds Tantalum ,Niobium as the dominant products in the scope of rare metal new ... materials, including many sorts and grades of their metals, sheet, tube, wire ,rod ,crucible ... rare-earth metallurgy,load plates for the anodes of tantalum and niobium electrotyzing Capacitors and for corrosion ... send e-mail to tell me the detail of the prodcutions, I will reply to you as ...