Brush your teeth every day, we have to do one thing, but every time we put the toothpaste crowded crowded, toothpaste residue intradermal will always many, how can this happen? designers at design time, the skin of toothpaste at the bottom of the toothpaste skin design a v-ring, and mark dash prompt users here is can screeching, this residue in internal toothpaste can continue to use, has achieved the objective of conservation.
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