How do Chinese medicine hospitals run by Chinese medicine make herbs into granules?

In the past, it used to be a drug roller. The tool for grinding drugs in traditional Chinese medicine consists of an iron grinding tank and a grinding disk similar to a wheel. Chinese herbal pieces for relieving pain, such as adzuki bean, Ziziphus jujuba seed and cardamom, are decomposed and shelled by pushing copper particles back and forth in a copper mill, and the Chinese herbal pieces prepared from them have good medicinal properties. Although the new generation of traditional Chinese medicine pulverizer is widely used, the ancient traditional Chinese medicine pulverizer still plays an irreplaceable role.