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Frequently, we cant determine if someone is in the toilet, because the instructions of the toilet door are too unobvious.It`sembarrassing.This door handles will be completely hidden when the door is closed. This design makes a clearly determine whether the toilet was.
Zhejiang Sci-Tech University
Hangzhou, China
Zhejiang Sci-Tech University
Hangzhou, China
Weijie Kong
Guangbo Wang
Zhang Cheng
Zhenli Mao