Optional summer sun umbrella tips AQSIQ promulgated the "assessment of textile UV protection," states sun umbrella, only UPF (ultraviolet protection coefficient) is greater than 30, and UVA (ultraviolet) transmittance less than 5%, can be called anti-UV products, protection class standard "UPF30 +"; when the UPF greater than 50, Dongguan sun umbrella Supply, showed excellent product performance UV protection, protection class identified as "UPF50 +" consumers in the purchase, should be carefully. See protection class identity, according to local insolation conditions, to buy their own umbrella. The secret summer to buy umbrellas 7, sun umbrella UV can, fabric texture is not the most important, the major manufacturers are also on the fabric What are the technical processing. Generally cotton, linen texture fabric itself has a certain degree of UV resistance, but the degree is not strong Bale. On the market more than two years before the sun umbrella umbrella surface is coated with a layer of silver plastic, such processing can reflect and stop some of the ultraviolet lights. But the quality of silver plastic are good and bad in Dongguan sun umbrella wholesale, technical conditions are good manufacturers of silver plastic sun umbrella advertising umbrella is not easy to fall off supply, and some cheap sun umbrella for every one, just to the umbrella surface coated with a layer silver, after several off-color after sun exposure. Customized advertising umbrella, sun umbrella, outdoor Co. FREEMAN FREEMAN provided by the Dongguan City Outdoor. Dongguan FREEMAN outdoor Ltd. (dg-fm.com) strong, credible, in Dongguan, Guangdong travel, outdoor supplies industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead FREEMAN outdoors and you hand into the brilliant, for a better future!