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This " New models" breaks the traditional fixed cup shape ideas, the length of glass can be varied with the water level. So when we are camping or doing other outdoor activities , we will not be worried about an empty cup will occupy the space.
Jiangxi University of Finance and Economics
Nanchang, China
Jiangxi University of Finance and Economics
Nanchang, China
yongzhong he
xinying wu
yunhu yang
yu su