5th International Conference on Applications of Physics, Chemistry & Engineering Sciences Thailand 2020,Bangkok, Thailand

10th 2nd World global Summit on Oil, Gas & Petroleum Engineering,Villasmundo, Italy

16th 9th Global Summit on Mass Spectrometry,Muenchsmuenster, Germany

21st 2nd Environment, Green Technology and Engineering International Conference (EGTEIC),Lisbon, Portugal

21st International Conference on Earth Science and Geology,Romanoro, Italy