Porcelain balls are divided into filler balls and grinding balls. Filled ceramic balls are widely used in petroleum, chemical, fertilizer, natural gas and environmental protection industries, as catalyst support materials and tower fillers in the reactor. It has the characteristics of high temperature and high pressure resistance, low water absorption and stable chemical performance. It can withstand the corrosion of acid, alkali and other organic solvents, and can withstand the temperature changes in the production process.