All manuscripts must be free from plagiarism contents. Manuscripts submitted to Jordanian Journal of Engineering and Chemical Industries (JJECI) will be screened for plagiarism using Similarity Check /Turnitin plagiarism detection tools. All authors are suggested to use plagiarism detection software to do the similarity checking before submitting their manuscript to the journal. Editors check the plagiarism detection of manuscripts in JJECI by using Grammarly detection software (www.grammarly.com) and using Turnitin since September 2020. The journal will immediately reject papers leading to plagiarism or self-plagiarism. Whenever it is determined that manuscript has not complied with the plagiarism rules, the article is rejected (before accepting) and if it has been published (after accepting) it will be removed from the published list and placed in the withdrawn list (returned articles because of Failure to observe plagiarism law).