The QM series planetary ball mill is an essential device for blending, fine grinding, sample preparation, new product development, and small-batch production of high-tech materials. The QM-3SP planetary ball mill is characterized by its small size, comprehensive functionality, high efficiency, and low noise. It is an ideal equipment for research institutions, higher education institutions, and enterprise laboratories to obtain research samples (four samples can be obtained simultaneously in each experiment). The laboratory ball mill is equipped with vacuum ball milling jars, allowing sample grinding under vacuum or inert gas protection. The planetary ball mill is widely used in sectors such as geology, mining, metallurgy, electronics, building materials, ceramics, chemicals, light industry, pharmaceuticals, and environmental protection. The planetary ball mill features four ball milling jars mounted on a single disk. As the disk rotates, the central axes of the milling jars undergo planetary motion, enabling grinding and blending of samples by the moving grinding balls within the jars at high speeds. The planetary ball mill can pulverize and blend materials of varying sizes and properties using both dry and wet methods. The minimum grinding product size achievable with this mill is as small as 0.1 micrometers (i.e., 1.0×10-4mm).