The pot made of Q235 or Q345 steel plate may contain a small amount of S and P impurities, which will accelerate the precipitation of iron when it comes into contact with hot water, hot oil or oil, salt and vinegar for seasoning, resulting in thin rust on the pot. Although it is cleaned in time after cooking and cooking, as long as it is put in the pot, a slight oxidation reaction will occur, which will make the food rusty. Long-term use of this pot may be harmful to human health.
Therefore, it is suggested to choose other healthier cookers to avoid this harm.