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Caution the cover / Caution the cover

Caution the cover

It makes manhole covers indispensable, however, setting an invisible damage for citizen. In summer, many children are usually found to be scalded when they are playing and unknowingly touching the manhole covers that are heated by the sun, especially the covers in the parks. The design with stoving varnish on the surface of manhole covers keeps their appearance at the normal temperature and would turn red when they are heated up. Therefore, when the covers change their colors as they are heated up in summer, people would easily notice that and avoid being scalded.


University of South China

University of South China
Hengyang City of Hunan Province, China

Zhu weiji,
University of South China

University of South China