WAL1 > =99.92 T Manufacturing wire of high color lamp, wire of shockproof lamp and double-spiral wire

L Manufacturing wire of incandescent lamp, cathode of transmitting tube, hyperthermia electrode and reaming tungsten wire

W Manufacturing folding heating cord of electron tube

WAL2 > =99.92 T Manufacturing wire of fluorescent lamp

L Manufacturing heating cord of electron tube, wire of incandescent lamp, and reaming tungsten wire

W Manufacturing folding heating cord of electron tube, grid wire and cathode

W1 > =99.95 - Manufacturing reaming tungsten wire and heating components

W2 > =99.92 - Manufacturing grid side rod of electron tube and reaming tungsten wire