Billboard is a signal tool to start the next production process or transport to downstream process.

It generally refers to all outdoor media that transmit advertising information. The media size depends on the actual environment.

The pictures of shop signs, doors and facades can be drawn by hand, made by computer or printed on paper.

Billboard materials are generally used: square tube, angle steel, and other welding. Can have three-dimensional board, lamp fabric, blister, car paint, gusset, aluminum-plastic board and so on.

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