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, gold-plated circuit board corrosion resistance, reasonable prices. With the increasing integration of IC, IC foot the more dense. The vertical HASL process is difficult to become thin pads blow smooth, which gives the SMT placement brings the difficulty; another HASL of standby life (shelf life) is very short. So now most of the boards are heavy with gold or gold and silver processing method of the 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 circuit board in Shenzhen, quality assurance, reasonable prices. Activating the role of the copper precipitated on the surface layer of palladium, nickel starting as catalytic reactions of nuclei. Its forming process was chemically Pd and Cu in the displacement reaction. From the displacement reaction, the reaction rate of Pd and Cu will become slower, when Pd and Cu completely covered (without considering the sparse hole-dip), a substitution reaction will stop, but the actual production, it is impossible to The copper surface completely unnecessary activation (the copper surface completely covered). From a cost perspective, which makes Pd consumption soared sharply. More importantly, this is likely to cause serious quality problems diffusion coating and the like. Gold-plated circuit board corrosion resistance _ _ Shenzhen Gold-plated circuit board Newell Year (View) - The Department of Shenzhen Electronic Technology Co., Ltd. provided by. Newell Shenzhen Electronic Technology Co., Ltd. (www.yipcb.com) (www.yipcb.com) is a professional "pcb board" company. Since its inception, we adhere to the "good faith, sound management" approach, the courage to participate in healthy competition in the market, so that the "division Snyder, Newell a" brand has a good reputation. We adhere to the "service first, customer first" principle, so that record Newell won the trust of customers all of the printed circuit board, and establish a good corporate image. Special Note: This information is for reference only pictures and information, please contact us to obtain the most accurate information, thank you!