... lamp,VM lamp, is uniformity in pitch,shap Tungsten filament(lamp filament, tungsten heating filament) made by qualifed tungsten wire, are widely used ... and South Korea, we can supply a variety of filament of single coil,coiled coil,triple coil,and non- ... ) Complete tungsten industry chain (mine - powder - ingot - wire - filament)2) Advanced equipment imported from Switzerland FALMA, South Korea & Japan3 ...