ICCOE 2020 Shining Points: 1.Accepted papers will be published into IOP Conference Series: Earth and Environmental Science (EES) (ISSN: 1755-1315), which is indexed by EI Compendex, Scopus, Thomson Reuters (WoS), Inspec,et al.2.The outstanding professor CHOU Loke Ming from Tropical Marine Science Institute, National University of Singapore, Singapore has joined as Keynote Speaker. 3.The ICCOE 2019 was successfully held in Bangkok, Thailand.4.One day visit will be arranged in Singapore on April 24, 2020. ==Paper Publishing:Accepted ICCOE 2020 papers will be published into IOP Conference Series: Earth and Environmental Science (EES) (ISSN: 1755-1315), which is indexed by EI Compendex, Scopus, Thomson Reuters (WoS), Inspec,et al.