Standard products, that is, standard products, are used as the measurement standards of the Chinese Medicine Standard Reference Data Research Center; for drugs, they are the standard content in content determination. Standards include stoichiometric, metallurgical and pharmaceutical standards.

The reference substance, such as the standard substance, refers to the standard substance used for identification, inspection of national drug standards, content determination, inspection of impurities and related substances. They are an integral part of national drug standards. National drug standards are the material basis of national drug standards. This is a special measuring instrument used to check the quality of medicines. It is the benchmark by which the quality of medicines is measured. It is also used to calibrate data standards for testing instruments and methods. In drug inspection, it is a comparison of drug quality and drug quality. It is an essential tool for manipulating the quality of medicines.