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. Lu Shen copper and silver usually before the relevant chemical processes. Such defects appear in the immersion silver process silver circuit board, mainly because of a residual film is not completely removed before the process impedes deposition of silver layer generated. The most common is caused by a solder process residual film of the silver circuit board surface treatment, it is not developing the net result in the developer, which is the so-called "plastic film", this layer of plastic film hinders the immersion silver reaction . Mechanical process also produces one of the reasons exposed copper surface structure board will affect the uniformity of the silver circuit board stability board contact with the solution, the same solution circulating insufficient or excessive formation of uneven Shen silver layer. 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 how to identify the quality of Shenzhen circuit board silver circuit board is good or bad, quality assurance, reasonable prices. Weldability issues PWB manufacturers do not have to be reported, only three assemblers mistake occurs within a large heat sink / face high aspect ratio (HAR) "dewetting" slab on the issue (which means the wave After the solder filled only to half the hole depth) attributed to Shen silver layer. Through original equipment manufacturers (OEM) for more in-depth study of this issue show that this problem is entirely weldability issues arising due to the circuit board design, regardless of the final immersion silver process or other surface treatments. Silver circuit board materials | Taiwan silver circuit board | Newell record provided by the Department of Shenzhen-Electronic Technology Co., Ltd. Newell Shenzhen Electronic Technology Co., Ltd. (www.yipcb.com) (www.yipcb.com) strong, credible, a printed wiring board in Shenzhen, Guangdong and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Newell invasive and you hand into the brilliant, for a better future!