Many people make custom braclet for their events. It is cheap and and esay to promote. So it becomes popular promotional gift. Usually we put a slogan and simple logo on it with printed, colorfilled and embossed printed style. But you know, we can even put a colorful photo on with the CMYK printing. Let me show you. Four-color printing mode is a kind of color matching mode used in color printing. It uses the principle of three primary colors mixing and black ink to mix and superimpose four colors to form full-color printing. The four standard colors are Cyan, Magenta, Yellow and black. These four colors are usually used to reproduce thousands of other colors in printing. Most of our customers will make the photo on the figured wristband. It will be printed on the figured part of the wristband. Looks much more understanding. energy under the effect of phosphor which is very small amount added and green to human. The glow will fade gradually in about 3h depending on how much light it absorbs. It is the best one for night event. Such music show, night walk and so on. The logo can be same as regular debossed, embossed or printed on the glowing wristbands. After exposure to natural light, fluorescent light, and ultraviolet light, the phosphor can store the light energy, stop the light and release it slowly in the way of fluorescence, so the light can still be seen at night or in the dark, lasting for hours to more than ten hours. The luminescent powder can be automatically lit in the dark. The main component is rare earth, which belongs to inorganic materials. The luminous powder first absorbs a variety of light and heat, converted into light energy storage, and then automatically luminescence in the dark, by absorbing all kinds of visible light to realize luminescence. The product does not contain radioactive elements, and can be used indefinitely, especially for short wave visible light, sunlight and ultraviolet light (UV light) under 450 nanometers. Accept the ability. A UV rubber bracelet can transfer it’s color darker under sunshine when absorbing UV light. It transfer to purple or blue normally which indicating the strength of the crazy rubber band braceletsUV index. Wearing it on the wrist is a good way to avoid long time staying under strong sunshine. We add UV powder which is also green as silicone in production. The UV powder is kind of photochromic material. We use it to make this change. Photoreceptor color is irradiated by ultraviolet or sunlight, absorbs ultraviolet or sunlight, and produces changes in color. When it loses ultraviolet or sunlight, it returns to the crazy rubber band braceletsoriginal color.