If the product is in unused condition immediately after delivery, the product will be charcoal gray. Since it has been treated with nitride (which makes iron rust resistant). In addition, there may be unevenness in color, whitish speckles, and hemline patterns on the surface. This product is caused by heat treatment processing, so it is not dirty or abnormal. Rest assured. It disappears as the fire passes through, and it does not affect the performance and safety of the pan. Thank you for your understanding.