The first thing to tell you is that there is no mercury on the thermos bottle, and there is no silver powder, but a thin layer of aluminum. Everyone mentioned above is the old emperor. Aquarius was invented in 1900 by the English chemist Dewar. When the bottle was invented, it was indeed coated with a layer of mercury. Later, in order to reduce the cost, it was also considered that the mercury was poisonous and changed to silver plating. Later, nearly a decade or two, with the advancement of technology, all The bottle is made of vacuum aluminum, which is economical and environmentally friendly. No one has used any mercury or silver powder. In addition, no matter what the coating is, the opposite side of the inner glass will not come into contact with water, so you can use it with confidence.