Hair dryer for fast drying wholesale.Negative ion hair dryer health care

　　Negative ions have health benefits. In different regions, the number of negative ions in the air is quite large, some people have measured, according to the number of negative ions contained in each cubic centimeter of air, there are about 1000 in the countryside, there are 4000 on the seashore, and more than 5000 near the fountain and waterfall. Because of the high content of negative ions in the air in these places, people feel energetic. However, in some densely populated big cities, due to more serious air pollution, the concentration of negative ions is relatively low.

　　There are also environmental departments have been tested, in the city, each cubic centimeter contains negative ions in the outdoor there are hundreds, indoor less, no more than 1000! Especially in the TV and computer next to almost no negative ions, long-term learning and work in this environment, often more fatigue, not conducive to health.

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