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 qualified board materials, quality assurance, reasonable prices. PCB substrate with classification: 1, according to enhance different (the most common classification) material paper substrate (FR-1 circuit board material good rate, FR-2 board material level, FR-3) epoxy fiberglass?? cloth boards (FR-4, FR-5)? composite substrate (CEM-1, CEM-3)? HDI sheet (RCC)? special substrate (metal substrate, ceramic substrate, a thermoplastic substrate, etc.) 2 , according to different resins to points? Chuo phenol resin plate? epoxy board? polyester resin plate? BT resin board? PI resin plate 3, flame retardant according to sub? flame retardant (UL94-VO circuit board material, UL94 -V1)? non-flame retardant (UL94-HB level) 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, multi-layer 2-40 Laminates professional providers, to provide customers with high-precision, high-quality circuit board in Shenzhen, quality assurance, reasonable prices. Protective layer: mainly used to ensure that the board does not need to be Tin Tin place is not to ensure the reliability of the circuit board operation. Top Paste and Bottom Paste which are the top and bottom solder mask solder resist layer; Top Solder and Bottom Solder Paste were protective layer and the underlying protective layer of paste. Silkscreen: mainly used serial number, production number, company name, etc. on the printed circuit board components. Circuit board material excellent rate | Guangdong circuit board materials | Newell record provided by Shenzhen-Electronic Technology Co., Ltd. Department. Newell Shenzhen Electronic Technology Co., Ltd. (www.yipcb.com) (www.yipcb.com) strong, credible, a printed wiring board in Shenzhen, Guangdong and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Newell invasive and you hand into the brilliant, for a better future!