Hazardous waste refers to the solid waste (" solid law ") which is listed in the national hazardous waste directory or identified by the national hazardous waste identification standard and the identification method. Based on the revised June 2016 countries "national hazardous waste list", has the following characteristics of solid waste (including liquid waste) called waste: corrosive, toxic, flammable, reactivity, infectious one or several features such as; It is not ruled out that dangerous characteristics may be harmful to the environment or human health, and it needs to be managed according to hazardous wastes.