How can a patented plaster prescription be legally sold?

Hello. According to the "Drug Administration Law of People's Republic of China (PRC)", the production (preparation) of drugs must obtain the corresponding license before production. If it is a medical institution that has obtained the Practice License of Medical Institution, it may apply for the Preparation License of Medical Institution. This application shall be handled by the provincial food and drug supervision and administration department. You need to make two applications. First, apply for the Pharmaceutical Preparation License for Medical Institutions; The second is to apply for registration of preparation products. If you are a natural person and want to produce this kind of drugs, you can start a drug production enterprise to produce drugs. You must first obtain the License for Pharmaceutical Manufacturing Enterprises, and then register the products and obtain the Pharmaceutical Registration Certificate.