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 plywood professional supplier, board schematics, providing customers high-precision, high-quality circuit board in Shenzhen, quality assurance, reasonable prices. Modern materials are double-sided PCB board CCL, also known as CCL (Copper clad laminate) CCL. CCL is the core of the PCB. CCL depending on the substrate material is divided into three categories, namely, paper board, composite substrate and FR-4 board three categories, its properties and uses are different, which is the current mainstream FR-4. The computer we use every day all the PCB, Guangdong circuit boards, and are based on FR-4 as raw material. 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 professional providers, to provide customers with high-precision, high Shenzhen circuit board quality, quality assurance, circuit board design, reasonable price. How to solve the increasingly complex circuit design it? Double panel appeared. This has both surfaces of a wiring board. However, to use on both sides of the wire must be between the two sides have the proper electrical connection down. So, people come up with a way - Punch! "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 the wire on both sides. Because the double-sided single-sided area than twice as big, and the wiring can be interleaved with each other (around to the other side). Therefore, it is suitable for use in more complex than single-sided circuit. Circuit board design | Newell Year (Advisory) | Guangdong board is supplied by Shenzhen Electronic Technology Co., Ltd. Newell. Newell Shenzhen Electronic Technology Co., Ltd. (www.yipcb.com) (www.yipcb.com) Guangdong Shenzhen, printed circuit board leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Newell create leadership with the staff warmly welcome all inquiries negotiations to create Newell create a better future.