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讲故事的牙刷 / The storytell toothbrush

讲故事的牙刷

The storytell is a correction of children's brushing products.When children brush on the wrong way , the story will stop; andthe story will continue to play, when use the brush correctly.

Design

Ningbo Institute of Technology,Zhejiang University

Ningbo Institute of Technology,Zhejiang University
Ningbo, China