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sun umbrella

Feb 08, 2018

sun umbrella


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It is mainly used to protect the sun from direct sunlight and to block rainwater. Solar umbrellas block about 70 percent of the uv light, but can't isolate the reflected ultraviolet. Without uv coating umbrella, also can use the sun umbrellas, ordinary black umbrella defense effect is relatively good, followed by pink, yellow, and red almost no uv protection function