1.Custom design membrane key 2.Second surface printing 3.UV resistance. 4.Waterproof Beyond 15 years production experience touch screen ... requirements, such as Shielding, Windows/Lens Coating, Embossing, Embedded LEDs, UV glossy/matte/textured, EL,LED backlingt,rubber keypad etc.The ... is available and keys can make different shapes.Products show: UV resistance membrane key