Peer review declaration

All papers published in this volume of Journal of Physics: Conference Series have been peer reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing. □ Type of peer review: Single-blind / Double-blind / Triple-blind / Open / Other (please describe) Double-blind □ Conference submission management system: All the papers were submitted via the conference email: submit@cmsa2020.org or cmsa2020sub@sina.com □ Number of submissions received: 937 □ Number of submissions sent for review: 586 □ Number of submissions accepted: 283 □ Acceptance Rate (Number of Submissions Accepted / Number of Submissions Received X 100): 30.17% □ Average number of reviews per paper: 2.1 □ Total number of reviewers involved: 158 □ Any additional info on review process: CMSA2020 uses the iThenticate software to detect instances of overlapping and similar text in submitted manuscripts. □ Contact person for queries: dwfang@yeah.net