brief introduction： LED panel (LED panel), is a display way through the control of semiconductor light-emitting diode, used to display text, graphics, images, animation, market, video, video signal and other information display screen. The LED module is composed of a quadrilateral light-emitting diode module integrated with multiple rows and columns, and at least one side of the quadrilateral module is an edge with more than one set of concave and convex groove blocks. The quadrilateral module can have at least one

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