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According to the national requirements for the quality management of journals, to strengthen the prevention of academic misconduct risks and improve the academic misconduct system construction standard checking and mending work, it is recommended that the authors of the paper checking and testing through the official website of this site before submitting the paper. In view of the authors in the external channel checking easy to cause leakage of papers and results, the journal and Wanfang data cooperation, especially to give the authors pre-test channel, the authors can be through the following URL, pre-testing, test results are only for the reference of the authors, the final finalization of the final review to the journal test results shall prevail. (Link address: http://chinaoils.wanfangtech.net). Wanfang detection system is a third-party test, if you have any questions, please contact the author and the testing party (Tel: 400-888-3624).