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The sun, the light and the radiation that could look to see, such as radiation, ultraviolet and infrared rays. Which is harmful to the skin and the eyes of man
radiation UVB is the cornerstone that harm humans
.Radiation UVA contained in the sun is 10 times. UVB
but due to the size UVB causing harm to 1000 higher, as they are the most important and less UVB pathogens.
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