... Tungsten wire, black tungsten wire 2,W1,W2,WAL1,WAL2 3,Super quality and competitive price 4,Purity>=99.95% Black Tungsten Wire With ... high purity APT materials,the tungsten wire made by advanced technology. Black tungsten wire is featured with minimum formation at high ... electrode and lead, ect.The main applications of black tungstne wire is for the production of coiled incandescent lamp filaments, ...