... :W-2 fine particle tungsten bar& rodPurity:99.98% Specification: RF1212300,RF121250Quality: Q/ZYH ... can be widely used in illumination, heater and the electronic mechanical engineering, etc. The ... making the electricity photo source, the automobile and the tractor light bulb, make lattice side ... framework, leading wire, electrode, heater and contact materials and so on. 99.98% Pure Tungsten Bar