Tantalum sheets, Tantalum- tungsten alloy sheets(Ta2.5W, Ta10W), Plate Grade: RO5200.RO5252,RO5255 Purity: 99.95% or 99.99% We are main producer of Tantalum ... Niobium products.Tantalum plate, Tantalum sheet, Tantalum foil, Tantalum stripPurity : 99.95%min or 99.99% ... unlisted sizes are available upon customer’s requirement. Tantalum plate