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, reasonable prices. The board includes many types of working level, such as signal layer, a protective layer, silkscreen, internal layer. Signal layer: mainly used to place components or wiring. Protel DXP generally comprise an intermediate layer 30, i.e., Mid Layer1 ~ Mid Layer30 What is a circuit board material, the intermediate layer is arranged to the signal line, used to place the top and bottom components or copper. 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 material specialized supplier, providing customers with high precision, high-quality printed circuit boards Shenzhen circuit board materials, quality assurance, reasonable prices. Classification board classification c retardant characteristics can be divided into 94V-0 / V-1 / V-2, 94-HB four prepreg: 1080 = 0.0712mm, 2116 = 0.1143mm, 7628 = 0.1778mm.FR4 CEM -3 are represented plate, fr4 glass fiber flexible circuit board material, cem3 composite substrate is halogen-free means that does not contain halogens (fluorine bromine iodine and other elements) of the substrate, because bromine in the combustion produces toxic gases environmental requirements. Tg is the glass transition temperature, i.e. the melting point. Circuit board must fire, at a certain temperature does not burn, only soften. At this temperature point is called the glass transition temperature (Tg point), this value is related to the PCB dimensional stability. Newell Year (map), what is a circuit board materials, Guangdong circuit board materials by the Department of Shenzhen-Electronic Technology Limited. Newell Shenzhen Electronic Technology Co., Ltd. (www.yipcb.com) (www.yipcb.com) adhere to the "people-oriented" business philosophy, with a professional staff, and strive to provide the best products and services to contribute to the community, and welcome new and old customers throughout the visit, sincere cooperation for a better future. Newell create - your trusted friend, Company Address: Bao'an District of Shenzhen City forward Road Newell Innovation Center B507, Contact: Huang Shengxing.