Publication Recommendation: - Authors with excellent abstract/reports are recommended to submit full papers to Chemical Engineering & Processing-Process Intensification (CEP:PI) or Journal of Microwave Power and Electromagnetic Energy (JMPEE) to publish full papers from the conference reports. Both the journals are collected by SCI. The manuscripts will go through peer review and meet the requirements of the recommended journal. - CEP:PI endorses the 4th GCMEA conference. A special issue for the 4th GCMEA will be published by Chemical Engineering & Processing-Process Intensification. The website of the journal is: https://www.sciencedirect.com/journal/chemical-engineering-and-processing-process-intensification. - JMPEE will publish the recommended full paper in regular issues. A statement which shows that the paper is a journal version of the materials in the 4th GCMEA conference should be included in the acknowledgement. The website of the journal is: http://jmpee.org/.