changes in color. When it loses ultraviolet or sunlight, it returns to the original color. Photoreceptor products, after sunlight or ultraviolet radiation, can absorb the energy of the sun or ultraviolet rays, produce changes in the molecular structure, lead to changes in the absorption wavelength, and produce color changes; when the sun or ultraviolet energy is lost, the original molecular structure is restored and the color of the cost is reduced. Application of photosensitive discoloration material: coating, suitable for various surface coating products, including PMMA spray paint, ABS spray paint, PVC spray paint. Ink, printing of various materials, including fabric, paper, synthetic film, glass, etc. Plastic products, suitable for various kinds of plastic PP, PVC, ABS, silicone rubber and other materials, such as the ejection, out of shape. We make the UV transfer wristband with silicone material original colors. So it look like jelly with translucent. The it gets to purple or blue in the sunshine, so cool it is. All styles of logo we cancheap custom lanyards customize on it, debossed , colorfilled, embossed, embossed printed or print. And the size we can make is adult , women, youth and toddler. The there is anything unclear, please go to our category at which we will show you all. printed-wristbands-ukwristbands-online-coupon-code 10pcs keychains free. Order less than 100 get 50pcs wristbands free & 5 pcs keychains free. Friendship bracelets are two or sereral bracelets that shows the friendship between team players, cheap custom lanyardsfriends, classmates and so on. It is easy to make Friendship bracelets for famlies also. We make it in different size. 202mm for adult, 190mm for women, 180mm for youth and 150mm for toddler. Some inspiraton and wish should be printed on the wristbands. When graduate from school, some classmates will leave us. We can make bracelets to everybody for friendship. The bracelet can be colorful with segment or swirl style. It is cute to make camouflage, rainbow, glowing or UV wristband. All it can be customized in our store. The logo can be embossed, debossed, colorfilled, printed or embossed printed. We can make our names, slogan and kit on it. Our designer will make the best design.