... , screw, ring, wire, foil, sheet, rod, tube Tungsten nickel iron alloy plateApplications: * For producing electric light source parts,components of ... electric vacuum; * For producing W-boats,heat shield and heat bodies in high temperature furnace.Size: 1.0~50mm ... certified ISO9001:2000 company, we have strict quality control system and provide professional service to our customers around the world. ...