peoplehasbeenspoilingthehealthsincetheimmensequantityofchemicalshavebeenproducedandalreadyusedinpursuitofconvenienceandvarioustoxicsubstanceshavebeenproducedunintentionallyandaccumulatedinenvironment.
Therefore,willdevelopandimproveanewriskmanagementsystemandadisasterpreventionsystemtopreserveandcreatethecityenvironmentwherepeoplefeeleasyandsoundintheirlife.
