3rd The Pandemic Where to Going Forward,San Jose, United States
5th Global webinar on Forensic Science,West Bengal, India
11th 2021 The International Conference on Science, Education, Technology & Management (ICSETM 2021),Melaka, Malaysia
26th 2021 International Conference on Materials Science and Chemistry Engineering (ICMSCE 2021) ,Qingdao, China
6th 2021 13th International Conference on Chemical, Biological and Environmental Engineering (ICBEE 2021),Hangzhou, China
