Cold galvanized iron wire (electro galvanized iron wire) is to gradually coat zinc on the metal surface through the unidirectional current in the electroplating tank. Cold galvanizing (electro galvanizing) is to gradually coat zinc on the metal surface through the unidirectionality of current in the electroplating tank. The production speed is slow, the coating is uniform, and the thickness is thin. It is usually only 3-15 microns, with bright appearance and poor corrosion resistance. Generally, it will rust in a few months. Compared with electro galvanizing, hot dip galvanizing has lower production cost and less impact on the environment than electroplating.