... 4. provide design and programme 9mm LED Pixel LightType 9mm single color led pixel lightSizediameter of bulb is 9mm.Colorred, yellow, blue,green, ... signs on high-rise building. 12mm LED Pixel LightType12mm single color led pixel lightSizediameter of bulb is 12mm.Colorred, ... signs on high-rise building. RGB LED Pixel LightType12mm single color led pixel lightSizediameter of bulb is 12mm.ColorRGB with ...