indicates that the product uv protection function is admirable, protection grade marked as "UPF50 +". Consumer is when the choose and buy, carefully check protection grade logo, usually an umbrella along to the skeleton inside place would sew have volume label, UV umbrella will usually in volume label marked role and the corresponding class UV resistance ultraviolet prevention numerical. If do not have this kind of label sunshade, general won't have anti-ultraviolet function.
How should consumer choose sunshade? Before buying uv umbrella to national standard except in accordance with the aforesaid look carefully at protection grade mark outside must pay attention to the following:
1. See umbrella surface texture. Generally speaking, cotton, silk, nylon, viscose etc material anti-ultraviolet performance is poorer, and polyester is good. Usually used to umbrella-made fabrics have silver glue, color of ding, pearl rubber, touch attack cloth, the TC fabrics such as cloth etc. In addition, anti-ultraviolet performance to satin fabric below ordinal it is best, twill, plain. Consumers may, according to the nature of the fabric umbrella preliminary judgment anti-ultraviolet performance.
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