Grounding rod is in order to let the conductor and the earth to ensure that the conductor and the earth contact to ensure that the current smoothly drain one of the indispensable grounding equipment. The raw material of grounding rod is generally copper-clad steel. Therefore, copper-clad steel grounding wire is the key to the entire lightning protection project, grounding is to ensure that the current is safe and rapid leakage into the earth is an important link. Copper-clad steel grounding rod is suitable for general environment and wet, saline and alkaline, acidic soil and produce chemical corrosion medium special environment, generally do not do anti-corrosion treatment. No special requirements for the soil, the smaller the soil resistivity, the better. If the soil conductivity can not be satisfied with the use of requirements, generally can deepen the burial depth.

As the content of active ions in the soil is one of the factors affecting the grounding resistance, many soils contain active electrolytic ion compounds are relatively rare, simple grounding body will not reach the grounding requirements. After experimental comparison, reversible slow-release filler is added to the grounding rod. This filler has the characteristics of water absorption, water release, reversible. This reversible reaction is useful to ensure the useful temperature of the environment inside the shell layer and the stability of the grounding resistance.

The filler is non-toxic side effects, in the long time with the metal electrode with the effect, in the ion generation and on the copper alloy to avoid corrosion of the two aspects have reached a better effect. After the ion generated by this method absorbs the earth's moisture, it can release the active electrolytic ions to the surrounding soil through the deliquescence effect, making the grounding rod become an ion generating equipment, and then improve the surrounding soil quality to reach the grounding requirements.