Each pharmaceutical manufacturing industry should arrange its own quality control unit with independent responsibility for drug quality control. Its main task is to maintain the quality and stability of any raw materials used in drug production, the drugs in production and the produced drugs, and it is its duty to provide various support for quality control in the production process of drugs. It is mandatory to have a laboratory under this. There should be sufficient staff and equipment in the laboratory for testing and analyzing the quality of drugs in production or finished production. Under this type of arrangement, the minimum quality control process specified by the department may be conducted by the relevant industry and other special quality control work may be done through other laboratories approved by the department.