In the teapot incident, most of the so-called "purple sand" liners are similar.
It is also a hidden rule of the industry.
If it is available at home, it is recommended to stop using it first.
You can go to the buyer and see if there is a more reasonable way to deal with it.
The real purple casserole is made of purple mud, which is non-toxic. However, some profiteers claim that the inner container material of the purple casserole is really purple mud, but it is made of various common clays such as earth, red soil, black mud and white mud, and dyed with chemical raw materials such as "iron red powder" and manganese dioxide.
Food quality and safety experts said in an interview with reporters, "From the common sense of food safety, chemical raw materials such as manganese dioxide and nickel oxide have certain toxicity.
Identify the authenticity of the teapot, look at the color: the color of pure purple sand, whether it is purple, yellow, red or the color between them, must have a jade-like charm. Its light quality is dark, just like oiling, the more polished it is, the less waxed it can be. You can refer to the material effect of old jade. Due to limited resources, the rarer this material is, the more valuable it is. Look at the feel: the feel of purple sand should be smooth and round, comfortable, although there are particles, but very round.