The electrode consists made of pure copper tube and filled with a mixture of ionic compounds. The moisture condenser absorbs environmental moisture and leaches out at the bottom of the rod, lowering gradually the resistivity of the surrounding soil. Features 1. Grounding resistance is independent from weather condition, high stability & no routine maintenance. 2. The electrode is high corrosion resistance. It can be used for 30years at least. 3. Easy installation occupy few area, no need large construction projects, save materials. 4. Technical parameters meet the standard of UL467 5. All materials of chemical earth electrode are no toxicity and pollution. It is one product friendly environmentally.