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Rubber pedrail suitcase / suitcase

Rubber pedrail suitcase
Rubber pedrail suitcase

When people use a suitcase,they have to lift it up when they go upstairs or downstairs and it make them tired.This suitcase has rubber pedrail on the bottom surface and side surface,so that it can move smoothly on stairs and people needn't waste energy to lift it up.

University

Donghua University

Donghua University
Shanghai, China

jien Wang,
Donghua University

yuetong Zhao,
Donghua University