In some cases, documents showing the full text of periodical industry fees can be obtained free of charge. Broadly speaking, the classification of periodicals can be divided into informal periodicals and formal periodicals. An informal periodical refers to a periodical that has been approved by the administrative department to receive "internal approval" for internal communication in the industry (generally limited to internal communication and not publicly issued), but it is also a legal periodical.
General regular journals have gone through the process of informal journals. Official periodicals shall be examined and approved by the Press and Publication Administration and the State Science and Technology Commission within the agreed number and incorporated into the "unified domestic serial number". The application for running a journal is relatively strict, which requires a certain publishing strength. Official periodicals have an independent publishing policy.
General periodical
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