The pictures of shop signs, doorways and facades can be drawn by hand, made by computer or printed on paper. The materials of billboards are generally welded with square tubes, angle steel, etc. It can have three-dimensional plate, lamp cloth, blister, car paint, gusset plate, aluminum-plastic plate, etc

It is mainly divided into monochrome and full-color display screens. The monochrome price is low. It is applicable to places that only need to display text and are constantly updated, such as hospitals, banks, passenger stations, tax authorities, docks, wholesale markets, hotels, etc. The full-color LED display is actually equivalent to a display or an advertising player. The cost investment of large full-color billboards in the early stage is quite large, which is mainly applicable to advertising, central urban areas with very large traffic, sports venues, etc.