Patent No.：ZL 02 2 78411.X
　　■Improves the local soil environment, lowers the receptivity of the local soil.
　　■The close contact between the earth pole and the soil can lower the resistance between them effectively.
　　■The slow-releasing of the electrolyte material inside the earth pole forms a branch-shape electric channel with low resistance, therefore increasing the equivalent diameter of the earthling body and reduces the earthling resistance.
　　■The slow-releasing electrolyte material keeps the resistance-reducing effect stable for a long period of time.
Fine anticorrosive capability ensures the earthling system validity and reliability when earthling bodies are used in highly corrosive areas.