NR/SBR RUBBER SHEET can't magnetic isolation. Because NR/SBR RUBBER SHEET magnet is a magnetotactic line and magnetic feeling in line like in heat properties, lee said a piece of heat source, NR/SBR RUBBER SHEET next to it don't feel hot only burn calories, and not to be separated from the can, such as cold winter air consumption fast so feel less. Similarly, NR/SBR RUBBER SHEET consumption magnetic feeling line only iron in of free electrons, to take its consumption, a magnetotactic line can't through, but can absorb in iron itself