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Auto Rebound Zipper can rebound slowly by itself without handing it. The most discomfiture thing at public maybe not remembering to zip up your trousers or bags. The Auto Rebound Zipper will remember to do it for you automatically
If you forget to pull up your zipper, it will automatically return itself after a few minutes to compensate for your mistakes, such as the embarrassment of forgetting zip up your trousers, the danger of forgetting to close your bags, etc.
Chen Jian; Liu Zhen; Zhou Hai-lun