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Right Choice / product

Right Choice
Right Choice

Most man didn’t know when we went to the ladies’ toilet,we often
need to queue and wait for a moment,but at this time we don’t
know which one will be more faster and we always feel I was in
the wrong line。
“Right Choice”is a doorknob which can sign.If someone enters
into the washroom and won’t need a long time,just locks the
door as usual,and the door will show the yellow,means you can
use it soon.But if someone needs a long time,the doorknob needs
to be turned more than a half circle,and it will show the red.When
other people see it ,they don’t wait for it.

University

ChangChun University Of Technology

ChangChun University Of Technology
ChangChun, China

ai qing,
ChangChun University Of Technology