What does the H symbol for grazing with purple sand mud mean?

The symbol of Zisha Mud Pasturing H is Zisha Mine. Also known as Zisha Mine, nicknamed "rich soil", commonly known as "azure mud", "reddish brown mud", "bottom groove mud" and "red mud", it is the main raw material for making Zisha pots (vessels). Purple sand is a kind of clay mineral with special composition. Although its structure and performance are excellent, it is not uncommon in China. Geological data show that Liaoning, Hunan, Jiangxi, Anhui, Sichuan, Jiangsu, Ningxia and Inner Mongolia are rich [1]. Finished products made of purple sand, such as purple sand pots, purple sand pots, purple sand vases, purple sand tea sets and other purple sand crafts. Thanks to drinking tea, the teapot is the most common, which is characterized by not taking away the aroma of tea and not having the taste of cooking soup. The wall of the teapot absorbed the fragrance of tea, and the empty teapot was filled with boiling water for a long time.