1. As far as the purple sand material is concerned, the purple sand inner container fittings of Jiuyang brand purple sand pot are from Chaozhou, Guangdong and Yixing, Jiangsu, all of which have undergone strict inspection and meet the requirements of the national standard Purple Sand Pottery. The purple sand inner container belongs to purple sand products.
2. From the perspective of food safety, some profiteers may use a variety of common clays such as farmland, red soil, black mud and white mud, and add chemical raw materials such as "iron red powder" and manganese dioxide to dye them to pretend to be purple casserole. However, chemical raw materials such as manganese dioxide and nickel oxide have certain toxicity.
Therefore, you must be cautious when buying Jiuyang purple casserole, and try to choose a guaranteed formal channel to buy it.