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 Shenzhen board, quality assurance, gold-plated circuit board selection, reasonable prices. Since microetch residue out, it will lead to rapid oxidation of the copper surface in the washing process, the water quality and flow and immersion time microetch are required to special consideration. Otherwise, the prepreg cylinder will produce too much copper ions, thereby affecting the palladium-cylinder life. Therefore, under conditions permitting (with sufficient discharge cylinder), after microetch after two countercurrent washing, then add about 5% sulfuric acid immersion, the prepregs after two countercurrent washing into the 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 plywood professional supplier, Guangdong gold-plated circuit boards for customers provide high-precision, high-quality circuit board in Shenzhen, quality assurance, reasonable prices. In today's increasingly high technical capability, IC foot more and more the more intensive, and HAL process is difficult to fine leg pads blow formation, which gives soldering SMT placement brings the difficulty, in addition to HAL inactive life board also shorter, and PCB made of gold plate on just to solve these problems, to some surface such as ultra-small 0603 and 0402 of paste board, played a decisive role in the quality too, so the entire board gold in high-precision and ultra-small chip technology is relatively common. In the sample stage, gold-plated circuit board recycling, affected by the parts procurement cycle, generally do have to wait for some time PCB board, and sample costs less than the HAL. Gold-plated circuit board couplers _ Newell Year (online consultation) _ Shenzhen, Guangdong gold-plated circuit board - The Department of Electronic Science and Technology Co., Ltd. provided by. 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.