How about purple outdoor sunshade, heat insulation and the use of feelings
Satin fabric is the best, then twill, plain;Umbrella surface should be large, not small;The darker the fabric, the better.
A good parasol canopy is the key to UV protection.Cotton, silk and nylon are not as good as polyester;Some umbrella fabrics are thin and thin, and it is better to choose fabric tightly;
Experts suggest that when you pick an umbrella, you might as well open your umbrella and look at the shadow on the ground, the color of the shadow is good. There is also a sun umbrella, umbrella coated with a layer of silver glue, used to block ultraviolet. According to professional personnel, the protective effect of silver colloidal surface is good, but the sunlight to turn black, in fact, inside or outside the silver coating does not affect the effect of sunscreen, the best choice of silver colloid on the inside, not easy to fall off.
