Tungsten heavy metals

tungstenheavy metalspurity: 99.98% Appearance: gray or dark gray metallic lusterUse:1.main ingredient of the raw materials for forging the special steel, wiredrawing ,lighting fixture and lathe tools;2.main ingredient of the raw materials for making kinds of thermal conductor and the high-quality automobile's crank and the cylinder3.widely used in the manufacturing industry of the gun, the artillery, the rocket, the satellite, the airplane,and shipsAuthentication Standard: SGSContents FormMain Element Content≥99.98Other element content≤Fe0.001Al0.0001Bi0.0001Si0.001Ca0.001Ni0.00035Mo0.0008O0.0047P0.001N0.002Mg0.0001Pb0.0001Sn0.0001Sb0.0001C0.00085As0.0001