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Are you boring about the water from the rain day?This umbrella can flod into the shape L,so you can hold the umbrellas hand to make it swinging, then the rain umbrella easy to clean By centrifugal force.
Zhe Jiang University
Ning Bo, China
Linlin,Ruan Chengzhu
Zhe Jiang University
Ning Bo, China
Ruan Chengzhu,Linlin