Tungsten powder W:99.95% min Size range FSSS: 0.6-20um Small quantity can be shipped immediatly 1.Appearance: Tungsten powder is dark grey2.Packing: In iron drum lined with double plastic bags of 100/200kgs net each.3. Use: These products are widely applied to making refractory steel,compound materials for automobile founding, guns, artillery, rokets,satelliter,aeroplane, warship and armour- ...