What are the advantages and disadvantages of purple sand cups (Figure)

In fact, there are fewer purple sand cups and more purple sand pots in the market, but they are all made of the same material, so they are connected. Let's talk about the advantages and disadvantages of purple sand. For example, our purple sand has a feature, which is its dual structure and pores. It can keep the tea fragrance in our cups very well, so it is not easy to collapse. Then its double structure and pores, there are many bubbles in its sand, that is, it forms an insulated environment with the outside world, which is very beneficial to our heat preservation. If it is harmful, in fact, normal purple sand is not harmful to our health, but now if some unscrupulous merchants deliberately pursue the smooth color of purple sand and make it with some chemical mud, these things will definitely be harmful to our health.