good morning I am writing from Chile my name is Francisco Rojas Rojas and I am looking for something that I believe you are the manufacturers. It is a command or control board that is installed on a Yagsing bus model goal gol from China. This device is used to exchange the information of the led sign on the upper front of the bus. The model of this control is LD-KZQO8A. I appreciate you give me the information. Thank you.