WHEN -
May 25-27 , 2019 ICMEM Committee in China
Jun 24-25 , 2019 HKCBEES in China
Aug 14-16 , 2019 NANOMS in China
Sep 27-29 , 2019 ACMMT in China
Sep 27-29 , 2019 ICEMM in China
Sep 06-08 , 2020 MEVE in China
Oct 18-21 , 2020 IEEE in China
Aug 06-08 , 2021 GSRA in China