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知识瓶盖 / Knowledge Cap


Now parents hope children early understanding of numbers and letters, expect children to acquire knowledge. Numbers and letters are the design of this bottle cap, which can increase the certain interest but also saves in spend on toys.


Jiangsu Normal University

Jiangsu Normal University
Xuzhou, China


Jiangsu Normal University , Xuzhou, China

Jiangsu Normal University , Xuzhou, China
xuzhou, China