electrode cone: 1.used as parts of resistance welding machines and spot welding. 2.Material: CuCrZr(C18150),CuCr(C18200), CuZr(C15000), CuNiSiCr(C18000), CuNiBe(C17510) 3. high conductivity We have a history of more than 27years.Its quality and price is very good. The products have been exported to many countries all over the world