Why does our Taifu high-iron pan paint turn white after one brush? Is there a coating on the outside?

Iron is originally silver, and it is not the coating that falls. The black color on the surface of the pot is a black oxide formed by natural oxidation of iron. This kind of oxide will fall off after the pot rusts or brushes hard, and it is iron, so there is no need to worry about hygiene problems. If you continue to use it for a period of time after falling, it will turn black and return to its original state. Don't worry ~