What is the function of the sun umbrella?
For the solar umbrella, different users have different definitions for it, but no matter what kind of solar umbrella, its function is to block the direct sunlight.
According to the national evaluation on the ultraviolet protection performance of textiles, only when the UPF (ultraviolet protection coefficient) is greater than 30 and the UVA (long wave ultraviolet) transmittance is less than 5%, can it be called an ultraviolet protection product, and the protection grade standard is "upf30 +". When the UPF is greater than 50, it indicates that the ultraviolet protection performance of the product is good, and the protection grade is marked as "UPF50 +". "However, the UPF of UV protection umbrella on the market is generally only between 30 and 40.
When the sun's ultraviolet rays irradiate the skin, they do more harm to the human skin, eyes and immune system. In order to protect the skin and eyes and prevent the harm of ultraviolet rays, it is necessary to buy a solar umbrella. When choosing an umbrella, you should choose a dark shade umbrella, giving priority to black, followed by yellow and pink. Do not choose red. Red is more important to you The function of preventing ultraviolet rays is very little. If you have high requirements, you can choose an umbrella with anti ultraviolet coating, such as silver glue, pearlescent cloth, color Ding, etc.
Article from:Solar umbrella manufacturer·http://www.jmdingfeng.com
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