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The electrical conductivity of the metal screen

Electrical conductivity, the performance of metal to current is called electrical conductivity, the metal has good electrical conductivity, the silver is best, copper aluminum to resign, because silver is a precious metal, silver in industry because is only used for electrical contact head, copper aluminum conductor, durable industry also needs to use some conductive performance is poor in some places of high resistance alloy, constantan, for example, manganese, copper, and iron out of aluminum alloy, etc., the materials used in the manufacture of components and electric heating elements.