On July 28th, Beijing, the two LED giant screens in Tiananmen Square erected a fence, and the workers' disassembly work on the LED giant screen has been fully launched. It is reported that these two LED giant screens were put into use in this year's "May 1st", mainly to broadcast the Beijing landscape customs film, which has been placed in Tiananmen Square for nearly three months. 3 Mm /8 Mm Nano Tip,Electronic Board Marker Pen,Touch Board Marker Pens,Infared Smart Board Marker Shenzhen Ruidian Technology CO., Ltd , https://www.wisonens.com