Which main ingredient in the raw materials of white pottery contains porcelain tires?

Kaolin in the raw material of white pottery contains porcelain tires. White pottery is a rare and precious variety in pottery. It is made of porcelain clay or clay. Because the iron content of the tire is below 2%, it is white or close to white after firing. Its firing temperature is usually around 1000℃, and it has not been sintered, so it cannot be made into porcelain. Most of the production of white pottery is very particular, with regular shape, exquisite decoration and overall elegance.

In Shang Dynasty, the production technology was improved, the raw materials were washed more finely, and the firing temperature was just right, so white pottery became more pure and beautiful. White pottery was only a flash in the pan in the late Shang Dynasty. It is mainly the ritual vessels and sacrificial articles of the upper class, and the shape and decoration are influenced by bronzes.