The price range is 80-180 yuan/block. The earthing module is a kind of earthing body with non-metallic material as the main body. Can be widely used in various fields of work grounding, protection grounding, anti-interference grounding, lightning grounding and anti-static grounding facilities, to reduce the grounding resistance, and to ensure the long-term stability of the grounding effect. Useful - MKF - size: 500 * 400 * 60 - resistivity at room temperature: 3.0 or less - shape: square useful - MKY - size: 150 x800 Ø - resistivity at room temperature: 4.0 or less - shape: cylindrical useful - MKM - size: 150 x800 Ø - resistivity at room temperature: 4.0 or less - shape: the plum blossom construction steps: 1, the grounding module level buried, buried depth of not less than 0.6 m, the distance between the grounding module is not less than 3 m, vertical buried, the distance between the grounding module is not small and 3 m as far as possible. 2. When connecting the electrode cores of the grounding module to each other or to the grounding grid, it must be welded. The weld shall be lap weld, and the lap weld length shall be at least two times the width of the core. Welding slag should be eliminated and anti-corrosion measures should be taken. 3. During backfilling of high quality clay, appropriate amount of water should be sprayed, layered and tamped, and the grounding resistance should be measured 24 hours after the module is fully hygroscopic.