This is a certificate of honor given to you on behalf of the country. Classical literature refers to talking or exchanging ideas, and now it refers to articles that conduct research in various academic fields and describe academic research results. A paper generally consists of title, author, abstract, key words, text, references and appendix. It is not only a means to discuss problems in academic research, but also a tool to describe academic research results in academic exchanges.
1, the materials of contact lenses are: silicone hydrogel water and polymers including methyl methacryl