High refresh frequency, high grey level, and no dithering while playing videos, can be used for live TV studio program, concert stage background, indoor video conference.  Even after prolonged use, the LED display can also maintain a perfect picture quality, white balance reappearance and adequate brightness. Specialized structure provides feasibility of various mounting methods such as front-maintain mounting, stack mounting, hang mounting, fixed mounting, etc. Good performance in color uniformity, large viewing angle, high brightness, high definition, low fault rate and easy for maintaining. The pixel correction technology is available