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 electroless copper circuit board, quality assurance, the price is reasonable that such deletions and immersion silver process itself electroless copper circuit board about the price, often can be found in the complete immersion silver process. The reason is that the copper surface pretreatment processes may inhibit the reaction layer adhered film electroless copper circuit board blackening unresponsive replacement reaction between the copper and silver. This film will prevent the release of electron behavior in the event of micro-etching of copper can not afford, but can not make the silver layer deposition reaction produced. Furthermore immersion silver bath mechanical agitation will produce some different results, to be the difference in the production of board geometry, so that different regions are different by scouring effect of medicine, and to allow the thickness of the silver layer dip crossing there is not enough uniform phenomenon, thin region will look not on the silver-plated copper and exposed the phenomenon. 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, reasonable prices. Electroless copper suitable for printed circuit board via metal electroless copper, also widely used in a variety of metals, non-metallic surface electroless copper process, which has high-speed copper sink, high stability, temperature and concentration range suitable for a wide . Shen copper layer of dense copper circuit board basic content, have excellent adhesion, bright copper-colored coating is at room temperature, deposition rate of 20 m / h. Electroless copper solution has good stability and high deposition rates, copper layer having a fine crystalline, good adhesion characteristics. Shenzhen electroless copper circuit board | electroless copper circuit board blackening | Newell record (certified merchants) 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.