Features of Spark Plug: 1.Multi-ribbed insulator eliminate flashover. 2.Isostatic pressing insulator with strong anti-press 3.Nickel plated shell prevents oxidation and corrosion. 4.Inner sealing with conductive glass ensures a fine conductivity and sealing. 5.Copper core electrode can prevent oxidation and corrosion,makes it has good electric and heat conductivity ,enables the spark plug has a long service life. -