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 gold-plated Guangdong Shenzhen circuit board circuit board welding process, quality assurance Guangdong gold-plated circuit board soldering process, at reasonable prices. Palladium ions residual liquid in fact, under normal circumstances, activation brought out in the secondary countercurrent washing process can be washed. Adsorption of trace elements on the substrate, the nickel-plated cylinder enough to cause bleeding occurs. On the other hand, if you say no normal factors leading to activation of the substrate absorb large amount of residue, sulfuric acid or hydrochloric acid can not wash it off, only to adjust palladium or nickel cylinders cylinders from roots. Increase after dipping and countercurrent washing, its role is to avoid too much content in the water and affect Pd Ni cylinder. 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. As more and more dense wiring Guangdong gold-plated circuit board soldering process, line width, spacing has to 3-4MIL. Gilded gold is prone to short-circuit. Immersion Gold board only has a nickel and gold on the pad, it will not produce a gold shorts. Immersion Gold board only has a nickel and gold on the pad, so the combination of solder and copper layer more firmly on the line. Project will not have an impact in making the compensation for the pitch. Guangdong gold-plated circuit boards, gold-plated circuit board soldering process, Newell Chong (high merchant) provided by the Department of Shenzhen-Electronic Technology Co., Ltd. Newell Shenzhen Electronic Technology Co., Ltd. (www.yipcb.com) (www.yipcb.com) is specialized in "pcb circuit board" of the enterprise, the company adhering to the "honesty, hard service" concept, to provide you with the most quality products and services. Welcome to inquire! Contact: Huang Shengxing.