2021 12th International Conference on Environmental Science and Technology (ICEST 2021) will be held during September 24-26, 2021 in Beijing, China. Conference Website: http://www.icest.org/ ICEST 2021 Shining Points: 1. For papers submitted to ICEST 2021, after the peer reviewing process by at least 2-3 experts, the accepted papers will be published into International Conference proceedings, which is indexed by EI Compendex, Scopus, Thomson Reuters (WoS), Inspec,et al. 2. Two Outstanding Professors have joined as Speakers.They are Prof. Gordon Huang from University of Regina, Canada and Prof. Yongping Li from Beijing Normal University, China 3. ICEST 2020 was held as virtual conference successfully during November 19-21, 2020. Paper Publishing: ICEST 2021 papers after the peer reviewing process by at least 2-3 experts, all the accepted papers will be published into International Conference Proceedings, which is indexed by EI Compendex, Scopus, Thomson Reuters (WoS), Inspec,et al. Submission and Contact Methods Submission Methods: Electronic Submission System: http://confsys.iconf.org/submission/icest2021 E-mail: icest@ieet.ac.cn Tel: +86-28-88220101 (Chengdu)/ +86-15908122414 (Wechat) Conference Specialist: Ms. Iris Tang ICEST 2021 can provide a platform for academic communication in Environmental Science and Technology. For more conference information, please visit the conference website:http://www.icest.org/