1, the fabric density. When the umbrella is selected, fabric textiles apparently sparse umbrella anti-UV poor performance in General, consumers purchase carefully.
2, select a larger umbrella. Due to its shrinking properties of fabrics, when buying umbrellas, umbrella should be larger rather than smaller.
3,the color, fabric and UV protection properties. Under the same conditions, the darker the UV resistance of the fabric, the better, by contrast, black, Navy Blue, dark green, light blue, light pink, light yellow, UV-resistant performance is better.
4, look carefully before purchasing protection class marking. AQSIQ promulgated the anti-UV properties of textiles assessment provides that only a UPF (ultraviolet protection factor) greater than 30, and UVA (ultraviolet a) transmittance of less than 5% can be referred to as UV products, protection class standard for "UPF30+"; when the UPF is greater than 50 o'clock, indicating products excellent UV protection properties, protection class is identified as "UPF50+". When consumers buy, carefully review the rating logo, again according to the conditions of the local Sun, purchasing for their own umbrella.
5, select brand-name products. Beware of common umbrella of others counterfeit UV protection umbrella.
6, anti-UV fabric under the umbrella of the nature. In General, cotton, silk, nylon, rayon and other anti-UV poor performance, and polyester is better. Typically used to color dimboa umbrella with polyester fabric, maikebu, etc. In addition, anti-UV properties of satin fabric is best, followed by Twill, plain, the darker the better.
7, see the umbrella surface processing. Anti-UV sun protection umbrella can, cloth are not the most important, major manufacturers is the material into what kind of treatment. Cotton, hemp fabric texture itself has some UV protection properties, but is not strong. Two years on the market before the Sun on the umbrella umbrella is coated with a layer of silver, this can reflect and blocks some ultraviolet rays of direct sunlight. There have been bad but the quality of silver, technical conditions of manufacturers of Sun protection umbrella Silver does not come off easily, and some cheap Sun umbrella for others, just to put a layer of silver on his umbrella, off color after several times of Sun.