Branch Snyder Department of International Ltd. Shenzhen-Electronic Technology Co., Ltd. - The Department of Electronic Technology Company is a professional custom single-sided, double-sided, 2-40 storey density multilayer professional supplier, to provide customers with high-precision high quality Shenzhen board, quality assurance, reasonable prices. Plywood, Multilayer wire between the two sides must have the proper electrical connection down. "Bridge" between this circuit is called pilot hole (via). Pilot hole in the PCB, full of holes or painted metal, which can be connected to each of the wires. It is possible to connect a plurality of components. 

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