Ceramic is a hard substance formed by mixing clay raw materials, barren raw materials and flux raw materials, crushing and molding, and a series of physical and chemical reactions at high temperature. More common are: ceramic tea sets, ceramic plates, ceramic bowls, and various ceramic household appliances. Multi-performance ceramic multi-functional seasoning pot enamel is a kind of composite material which is coated with one or several layers of enamel on the metal surface and firmly bonded through physical and chemical reactions after firing. The biggest advantage of this is corrosion resistance. Common ones are: enamel wok, enamel washbasin, etc. How to distinguish a modern enamel pot from an enamel cup in the 1950s and 1960s? First of all, enamel is made by coating a layer of ceramic glaze on the metal surface and firing at high temperature; Enamel has only one layer on the metal surface, and the enamel industry requires good suspension. Third, ceramics are mainly made by coating a layer of ceramic glaze on the ceramic blank and sintering at high temperature. Ceramic industry requires good plasticity, formability and firing whiteness; Refractory materials require high refractoriness, so there is not much difference between the composition of ceramics and that of rocks in chemistry. Therefore, it is concluded that these materials have no chemical raw materials themselves and are almost harmless to the human body.