EX Service is one of the most advantage led screen for outdoor big led screen size, it is newly designed energy saving module, and very strong in power consumption saving, its driver solution is much different from traditional screen which Red Voltage input 2.8V and Green & Blue 3.8V input, those models can save more than 30% power consumption in same brightness, same materials level, it is very popular for outdoor led screen because can save a lot of energy during led screen advertising operation, led screen size is bigger, energy saving is much more.