
Tungsten filament is a product of pure tungsten wire or dropped tungsten wire after finishing, with tungsten powder was main raw material, potassium, aluminum, silicon and other chemical elements as additives. Its purity is as high as 99.95%. According to the number of tungsten wire strands, tungsten filament can be divided into products made of single-strand tungsten wire and products made of multi-strand tungsten wire. When it is wound from a single strand of tungsten wire, the diameter of the…