CD (candela) basic unit of luminous intensity, candela is one of the basic unit of theinternational system of units.
LED lights with different colors have different luminous intensity, commonly used unit is the MCD, Milli candela. The higher the number, and description of luminous intensity, the greater, that is, the brighter. This is the brightness of the LED lights with an important index of the evaluation, higher brightness requirements of the lamp with the more expensive. This is because the High-Brightness LED chip prices higher and brighter, encapsulated more difficult.