Contact Person : Ms. Amber Li; Last Date for the submission of abstract : 30th January 2020; Description :Publication: CEEGE 2020 can be published in E3S Web of Conferences (eISSN: 2267-1242)(Open Access proceedings in Environment, Energy and Earth Sciences), indexed by EI Compendex and Scopus. CEEGE 2019 E3S proceedings was indexed by EI & Scopus.