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 layer multilayer circuit board professional supplier, to provide customers with high-precision high quality Shenzhen board, quality assurance, reasonable prices. Blind hole in which only the top or bottom layer visible, the other can not see that layer, that blind holes are drilled from the surface, but do not drill through all the layers. Blind holes may be as long from 1-2 buried vias boards, or from 4-3 (advantage: 1,2 3,4 conduction does not affect the alignment); and vias are buried throughout the 2 multi-blind holes in the circuit board, 3 negatives buried vias boards, 4 layers, layer traces of extraneous influence, but the higher cost of blind holes, need laser drilling machine. Blind plate is applied and one or more communication with the inner surface layer, the hole in the side is the side of the board, and then through to the interior of the board of date; simply put, it is a blind hole surface can only see one side, the other side in the plate yard. Generally used in four or more than four PCB board Naide International Limited Shenzhen Branch Newell Electronic Technology Co., Ltd. - The Department of Electronic Technology Company is a professional custom single-sided, double-sided, 2-40 layer plywood professional supplier buried vias board costs, to provide customers with high-precision, high-quality circuit board in Shenzhen, quality assurance, reasonable prices. Turning a blind / buried vias, first we start from the traditional plywood. Structure of the standard multilayer circuit board containing the inner line and the outer line, reuse drilling and hole metallization process, to achieve the internal layers of the link line function. But because of the increased density of the line, part of the package is constantly updated. Fuling District buried vias boards, buried vias boards negatives, Newell record (certified merchants) by the Department of Shenzhen-Electronic Technology Limited. Newell Shenzhen Electronic Technology Co., Ltd. (www.yipcb.com) (www.yipcb.com) in the printed circuit board in this area devoted boundless enthusiasm and passion, Newell has been creating customer-centric, for customers to create Idea value, quality, service to win market, and sincerely hope to cooperate with the community to create success, to create brilliant. Related businesses welcome inquiries, contact: Huang Shengxing.