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happy time / house hold / microwave oven

happy time

The toothpaste and toothbrush of combined as a whole ,and the principle of syringe .According to the outer wall of calibration control quantity of toothpaste .To protect human health and save use toothpaste.The toothbrush head front all adopt arc design avoid using injured children.

University

Shandong University of Science and Technology

Shandong University of Science and Technology
Qingdao, China

Qiuju Yu,
Shandong University of Science and Technology

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