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. Here is the properties of the luminous powder. 1st short excitation time, long duration of luminous and afterglow, high brightness. 2ndvery stable physical and chemical properties, strong environmental adaptability, ordinary service life. 3rd safe and reliable, energy saving, green environmental protection.4th The particles are small, and the fineness and granularity are evenly distributed. In the actual life, people make use of the long time luminescence characteristics of night light powder to make a weak light source, and have special use in the military department. This material is applied to various kinds of switch signs on the aviation instrument, clocks, windows, machines, and the handle of the door, and can also be pressed into various symbols and parts together with a variety of transparent plastic materials. Supplies (such as power switches, sockets, fishing hooks, etc.). These light-emitting components are illuminated at night, at night or by accidental blackouts, and after lightning, and it still continues to glow, allowing people to discern the direction of the surrounding and bring convenience to work and life. The ultra-fine particles of luminous materials can be added to textiles to make the colors more colorful. Children wearing luminous textiles can reduce traffic accidents. We use it to make the wristband glow so as to contribute to night event. custom-wristbands-fast-deliveryevent-wristbands-atlanta oddler, 7”(180mm) for youth, 8”(superband insect repelling wristband uk202mm) for adult in circumference and 1/4”(6mm), 1/2”(12mm), 3/4”(19mm), 1”(25mm) in width. We make it all together 2mm thickness. Regarding with the circumference, it is thesuperband insect repelling wristband uk most important factor to choose size in our order. It is the average sizes for toddler, youth and adult. The direct way to choose size is to measure the size of your wrist before selecting. If all the above sizes do not fit you, it is available for custom size. Our mould machine is updated to make variety of sizes. Printed, debossed or embossed with color silicone bracelets is of the most popular bracelets.Printed bracelets is the one that printed with color on the surface of the bracelets via the Screen Print. It is the plain and simple style to express yourself. Debossed or embossed bracelets is the kind that engraved lettering or raised lettering to let you message stand out. Also it can be color filled or printed to become a dazzling bracelets. A custom silicone wristband with different colors, logos or lettering is good for promotion of personal or the organization.