... use,vivid effect,thin 4.CE,SGS Brands for Computer Keyboard (factory price, good quality, timely delivery)Shape: Regularly rectangle ... 8. Temperature for storing: -5 Celsius degrees~+45celsius degrees EL keyboard characteristics: Wild view, low wastage, mild light, long lifespan, ... -no ultraviolet rays. EL Panel could be applied to any materials, such as paper, acrylic, film, foil, garment, light box, ...