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when there are few toothpaste remaining, you will squeeze it hardly. Although with great effort,it still doesn't work, which not only is a waste of time but also can't squueze toothpaste out. "Two-way" the toothpaste can let you have no remains, food packaging sealing strip closed side. When the toothpaste is used at its end, choose the opening size according to your need,toothbrush can stretch to toothpaste wall to find it, toothpaste can be sealed and stay again next time. no more waste and clean toothpaste.