With the vigorous promotion of smart city construction, smart traffic, smart medical care, smart security, smart energy, etc. are all vigorously concerned. Urban construction, traffic first, and intelligent transportation have become important driving forces for economic development. They have also become more integrated into all fields of social life. They have changed people‘s lives and working methods and played an important role in the smart urban construction....

E-waste should not be unfamiliar to the residents living in cities. Outdated old phones, obsolete computers, worn out old-fashioned TVs or fans, cell phone chargers, radios, MP3s, etc. ... When these things are used or used bad, how to deal with both convenient and environmentally friendly, it also Has become a problem that plagued many citizens....