Sign up for an Award
Participate with your entry in one of our professional or student awards.Sign up for an award
You are using an outdated browser. Please upgrade your browser to improve your experience.
Nowadays people use mobile phones more often.It is not healthy for us.So it is necessary to have a tool to remind us to use less mobile phones.Here is a type of mobile phone, whose shell is made of thermochromic material.When people use it for a long time，the part of the shell which touches people's palm will turn red gradually.Red is a warning color.It can remind people to put down the mobile phone and enjoy their life.
Xiangtan City,Hunan Province, China