... , tungsten bar, tungsten plate, tungsten alloy, cast tungsten carbide and etc. These products are widely applied to making refractory steel ... for automobile founding, guns, artillery, rokets,satelliter,aeroplane, warship and armour-piecing bullet. The Quality Assurace System ISO9002-1994 has ... been certificated by IQNET, BSI of UK and STC in China . At present, we can supply you ...