Baoji Refractory Metal Developer Co.,Ltd is one of the leading China tantalum plate/sheet manufacturers and suppliers, and as a professional company we have productive factory, welcome to wholesale tantalum plate, tantalum sheet products from us. ☆Chemical Composition:Chemistry % Grade Chief componentImpurities maxTaOtherFeSiNiWMoTiNbOCHNTa1Balance0.0040.0030.0020.0040.0040.0020.030. ...