26th ISTANBUL 29th International Conference on “Chemical, Biological and Environmental Engineering”,Yozgat, Turkey

28th 2021 10th International Conference on Chemical and Process Engineering (ICCPE 2021),Moskva, Russia

17th Chemical Engineering and Catalysis World Forum,London, United Kingdom

17th XХII International Scientific Conference “Chemistry and Chemical Engineering in XXI century”,Tomsk, Russia

24th 10th Global Summit on Mass Spectrometry,Porthcawl, United Kingdom

18th The 12th International Conference on Chemistry and Chemical Engineering (ICCCE 2021) ,Paris, France

25th 2nd International Conference and Exhibition on Chemical Engineering & Catalysis,Petershagen, Germany

19th 2021 10th International Conference on Chemical Science and Engineering (ICCSE 2021),Macau, Macau S.A.R.