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The 4M cup is the revolutionary transformation of the ordinary cup, its internal material is ceramics, high
temperature resistant, easy to clean. Using thermal elastic rubber as interlayer, when the temperature
of the water in the cup is changed, the shape of the cup will immediately change, so as to display the
temperature. The outer wall is made of soft rubber,comfortable to hold. Due to the structure of three
layers of the 4M cup, the cup won't broken even if it falling from a higher place, and it can isolate
it's internal heat, the internal heat will never hurt your hand.
Dalian Minzu University