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 circuit board copper sink layered quality reasons, quality assurance, reasonable prices. Load also due to the above requirements and have a great impact. Too much of the load will cause excessive activation of leaving the bath instability. Conversely, if too low will cause the loss of H2 to form the deposition rate is too low. Therefore, the maximum and minimum values ??should make recommendations and supply confirmation. If the temperature is too high, Na OH HCHO concentration of Pd +2 improper or excessive accumulation can cause problems PTH rough Snyder International Limited Shenzhen Branch - The Department of Electronic Science and Technology Co., Ltd. - The Department of Electronic Technology Company is a professional custom single panel , double-sided, 2-40 layer multilayer professional providers, to provide customers with high-precision, high-quality circuit board in Shenzhen, quality assurance Shen copper circuit board may be defective, the price is reasonable. In order to ensure the reliability of PCB plated through hole connections, electroless copper layer must have sufficient toughness. Mainly due to poor toughness electroless copper plating layer is due to the reduction of formaldehyde sink copper circuit board color Cause when Cu2 +, due to release hydrogen. Although hydrogen can not co-deposition and copper, but copper plating reaction, the hydrogen is adsorbed on the surface of copper, gathered into a bubble inclusions in copper plating layer, so that a large amount of bubbles copper layer voids, these voids cause chemical resistance copper plating layer is increased, the toughness is deteriorated. The main measures to improve the toughness of the electroless copper plating layer is added hydrogen barrier agent in the bath to prevent the accumulation of hydrogen in the surface of the copper layer Guangdong Shen copper circuit board, a first-order PTH board, Newell record (certified merchants) by the Shenzhen- Department of Electronic Technology Limited. 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.