Legal analysis: there are two ways to legally sell self-made plasters: 1, apply for a patent; 2. Find a way to sell patents to big pharmaceutical companies and ask for profit sharing when signing contracts. The state has set up an administrative license for the production and sale of drugs, and failed to obtain the corresponding qualifications and licenses in accordance with legal procedures, which is a minor administrative violation and a serious crime. Only manufacturers with legal sales qualifications can guarantee the smooth sales of goods. Only in this way can qualified plasters be sold safely and legally.

Legal basis: Article 7 The quality management department shall perform the following duties: (1) Supervise the relevant departments and post personnel to implement the laws and regulations on drug administration and this Code; (two) to organize the formulation of quality management system documents, and to guide and supervise the implementation of the documents; (3) To be responsible for auditing the legality of suppliers and purchasers, the legality of drugs purchased, and the legal qualifications of sales personnel of suppliers and purchasers, and to conduct dynamic management according to the changes of the auditing contents; (four) responsible for the collection and management of quality information, the establishment of drug quality files; (five) responsible for drug acceptance, guidance and supervision of drug procurement, storage, maintenance, sales, return, transportation and other aspects of quality management; (six) to be responsible for the confirmation of unqualified drugs and supervise the treatment process of unqualified drugs; (seven) responsible for the investigation, handling and reporting of drug quality complaints and quality accidents; (eight) responsible for reporting counterfeit and inferior drugs; (nine) responsible for drug quality inquiry; (ten) responsible for guiding the setting of computer system quality control function; (eleven) responsible for the audit of computer system operation authority and the establishment and update of basic data of quality management; (twelve) to organize the verification and calibration of relevant facilities and equipment; (thirteen) responsible for drug recall management; (fourteen) responsible for the report of adverse drug reactions; (fifteen) to organize the internal audit and risk assessment of the quality management system; (sixteen) to organize the inspection and evaluation of the quality management system and service quality of drug suppliers and buyers; (seventeen) to organize the examination of the transportation conditions and quality assurance ability of the entrusted carrier; (eighteen) to assist in quality management education and training; (nineteen) other duties that should be performed by the quality management department.