NEW TECHNIQUE TO MAINTAIN LONG LIFE LUSTER IN COPPER

摘要

The Shining of the copper metal becomes less in two three months or more due to weather effect and sometime it also become dark , in this invention New Technique to Maintain long life Luster in Copper , user can maintain the copper luster after passing of long decade of manufacturing . this is special process which increase and maintain the shining of the copper but not reduce the conductivity of the electric current .