Sun Umbrella, is mainly used to shield the sun directly from the umbrella. The choice of anti-ultraviolet umbrella mainly depends on the fabric of the umbrella. The research shows that the fabric with thick umbrella surface has better anti-uv performance than that with thin one. In general, fabrics such as cotton, silk, nylon and viscose have worse anti-uv effect, while polyester has better anti-uv performance. Some consumers believe that the thicker the umbrella surface, the better anti-uv performance, in fact, such as heaven umbrella series developed a light but very tight fabric, protective performance is far better than ordinary fabrics; in addition, anti-ultraviolet performance of the deeper the better color, satin fabric is the best, followed by twill, plain. Experts also remind consumers to recognize the performance of anti-ultraviolet signs. The UPF value, that is, the UV protection factor, is generally used to evaluate the UV protection performance of textiles. The UPF is the ratio of the average amount of UV radiation to unprotected skin, and the higher the UPF is, the better the UV protection is. The upcoming national standard stipulates that only when the UPF is greater than 30 and the penetration of UVA is less than 5% can the product be called an ultraviolet protection product, and the protection grade is labeled as UPF30 + , while when the UPF & GT; 50, the product shows excellent ultraviolet protection performance, shield level identified as UPF50 + . This summer on the Sun Protection Products Market, anti-ultraviolet Sun umbrella is favored. In the selection of UV Sun umbrella, consumers should master its characteristics, in order to choose a good umbrella from the appearance and quality are satisfactory.
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