1, Compound by Ca-Bentonite,Flake Graphite Powder,Sodium Carbonate,Coal& Carbon Powder etc. 2, 25kgs/bag 3, MOQ:40bags/1000kgs Leiying's Earthing Compound have passed the test by Wuhan High Voltage Research Institute, the most authoritative test Lab in China. Pls see another attached document which test report in Chinese Only. It was used as an earth-electrode backfill to reduce soil resistivity ...