AUTHOR=Qin Xingcun , Xie Pengcheng , Liao Cuiping TITLE=Study on the synergistic effect of NOx and CO2 emission reduction in the industrial sector of Guangzhou JOURNAL=Frontiers in Environmental Science VOLUME=13 YEAR=2025 URL=https://www.frontiersin.org/journals/environmental-science/articles/10.3389/fenvs.2025.1497121 DOI=10.3389/fenvs.2025.1497121 ISSN=2296-665X