Is there any rust spot on the plate of Xiaomi Electric Glass Kettle?

Most of the time small spots belong to the scale, such as yellow spots, pockmarks, rust spots and so on can try to clean them with citric acid or edible vinegar static bubbles.
If the above cleaning is not effective can try to wipe it with sandpaper or a white cleaning cloth to deal with cleaning. A small amount of rust often accompanied by our life, will not have an impact on human health.
Stainless steel rust principle: stainless steel is a crystal solid composed of a similar arrangement of atoms.
In addition to the element iron, it also contains metal components such as chromium, nickel, titanium, etc. Among them, chromium and nickel elements have an anti-rust function which forms a protective film-passivated film to prevent stainless steel from rusting.
Due to the different areas of use, the water hardness is different and may be hard water or soft water, hard water has impurities after heating. The impurities in hard water may be hard or soft.