State-level periodicals: periodicals sponsored by the Central Committee of the Communist Party of China, the State Council and their subordinate departments or China Academy of Sciences, China Academy of Social Sciences, democratic parties and national people's organizations, and periodicals sponsored by national professional societies. Publications clearly marked with the words "national periodicals" and "core periodicals" can also be regarded as national periodicals.

Database of Foreign Sci-tech Journals (Abstract Edition) is a continuous electronic journal approved by the former State Administration of Press, Publication, Radio, Film and Television and sponsored by Chongqing Weipu Information Co., Ltd., which is in charge of Southwest Information Center of the Ministry of Science and Technology. This photo is only officially displayed on VIP.