With the improvement of living standards, we have a corresponding improvement in the quality and quality of life. We began to focus on personal health and maintenance. I'm sure you've also come across this question, why do some people use electric toothbrushes, some people use manual toothbrushes? W

Question 1: Which toothbrush brushes cleaner? With proper brushing techniques and patience, both toothbrushes can clean teeth, but electric toothbrushes should be more efficient. Many people in life brush their teeth time is not enough, brush their teeth generally need about 2 minutes, usually fast