Tungsten Powder Appearance:Dark grey powder Package:Double plastic bags in iron drum ,50,100,200 kgpiece. Tungsten Powder AppearanceDark grey powderPackage:Double plastic bags in iron drum ,50/100/200 kg/piece. Or according to the needs of customer.Type And SpecificationRangTypeParticle Size(BET OR FSSS)Oxygen(max%)RangTypeParticle Size(BET OR FSSS))Oxygen(max%) UltrafineZW02ZW04>3.0m2/g2.0-3.0m2 ...