The TDM-20 benchtop multi-function powder X-ray diffractometer is one of the world's smallest desktop X-ray diffractometers.Complying X-ray diffraction principle to qualitatively or quantitatively analyze polycrystalline materials such as powder samples and metal samples, and analyzing crystal structure. It is widely used in industrial, agricultural, defense, pharmaceutical, mineral, food safety, petroleum, education and scientific research fields.