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. In order to render the appropriate hole state, degreasing entire hole has two basic functions. A clean surface. B so that the hole was positively charged copper thick film printed circuit board, in order to facilitate the negatively charged ions Bd adsorption / Sn colloids. FILM degreasing agent to clear the entire surface of the hole formed. The whole hole in degreasing agent surfactant entire hole when oil covered the entire plate, including the copper foil surface of the hole on a non-metallic resin and glass wire section. Micro-etching the surface of the plate removed. So that when the next activation will not waste the expensive palladium colloid in a huge area of ??the plate surface 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 of copper circuit board, providing customers with high-precision, high-quality circuit board in Shenzhen, quality assurance, reasonable prices. Reduced copper formaldehyde reaction can proceed smoothly, depending on the bath of NaOH, within a certain range, with increasing values ??of NaOH solution, to accelerate the deposition rate of copper electroless copper circuit board, but can not be too high NaOH, or vice The reaction intensified, resulting in the bath instability. Deposition rate of copper ion concentration electroless copper plating solution, with the bath Cu2 + ion concentration increases accelerated almost direct proportion to increase in the low concentration range, but to a concentration of copper ion concentration, the deposition rate increases change slow. While high concentrations of Cu2 + ion plating deposition rate can be obtained faster, but the copper ion concentration is too high, a side reaction increased, resulting in an unstable bath. Newell record (Figure) | Thick copper printed circuit board | Guangdong copper circuit board 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.