The development of powder industry must rely on grinding equipment. However, no matter how the development of ultrafine mill industry is now, it can not determine the development of the mill industry in the next few years.No matter now or in the next few years, the development of the mill is for the better development and future of the mill enterprise. Ultrafine mill is one of the most difficult barriers for the development of the mill industry in the future.China is a developing country. After the reform and opening up, all walks of life in China have entered a period of rapid development. However, the development of China's mill industry started late, but the development speed is very fast. Before the 1990s, it was used to deal with low hardness materials.