If you bought an outdoor LED display before the year of 2007.Your supplier might be ask you a question about virtual pixel LED display and real pixel LED display.Before the year of 2007, an LED display was with a lot of investment.In order to save th

Before buying an outdoor LED display, we need to know how to do LED display quality control.There are 62 key points about LED display quality control.I would like to share with you as below:1, Mask quality.2, PCB quality.3, LED quality.4, Iron cabine