Generally, the non-stick pan materials for drilling technology are composite materials, and only the coating of drilling technology is claimed to be non-toxic. If the coating is damaged, it may be harmful to human body. Because the general coating is thin, the probability of long-term wear is very high. Obviously, the vacuum drop will reduce the efficiency of the steam turbine, which is easy to think of, but this is not the main hazard. The main hazard is that with the decrease of vacuum, the axial thrust of steam turbine will increase, which will increase the axial displacement and even damage the thrust pad.

Cooking in an iron pan is the best.

The newly bought iron pot is soaked in salt water.

Sprinkle some salad oil and wipe it.

If it still smells, cut it into pieces with ginger, heat it in a pot and rub it in various pots (15 sheets).