We now can not lack of what is family? I think I don't say you also know, that's our household electrical appliances, because we now live every detail can say and household appliances are closely linked, and appliances now generally use the magnet that almost every electronic device used in magnetic material, we usually see in TV magnet, it will help the TV we can't see the electrical signals into we can see the picture. We usually use the rice cooker also has the ring magnet, only when the magnet in the rice cooker more role is to help the inside of the rice cooker will be steamed rice, rather like the inside of the TV set is a kind of ?