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Current toothbrush and toothpaste are separated, which occupy a large space during the daily life, and it’s not convenient for carrying. It also tends to be mixed with other people’s toothbrush and toothpaste. This type of toothbrush combines the toothbrush and toothpaste, which avoids certain step when brushing the teeth and increases the efficiency.
Peng Wang Yunyun Zhang Dan Zhang Qingqing Li