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 What quality silver Guangdong Shenzhen board is the board, quality assurance, reasonable price silver surface discoloration dirty and oxygen in the air with sulfur-related, will form silver sulfide film Ag2S yellow Guangdong and once the silver surface in contact with the sulfur What is the silver circuit board, if continued contacts will be gradually changed to dark brown. The possible sources of this sulfur pollution from dirty air pollution, or packaging paper from seemingly harmless. As oxygen is in addition to the air, the bottom surface of copper oxide Cu2O and CuO existing film, etc., which may be transferred to the silver oxide 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 What quality silver Guangdong Shenzhen board is the board, 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. Guangdong silver circuit board, Newell invasive, silver circuit board action by the Department of Shenzhen-Electronic Technology Limited. "Pcb board" preferred Newell Shenzhen Electronic Technology Co., Ltd. (www.yipcb.com) (www.yipcb.com), the company is located: Bao'an District of Shenzhen City forward Road Newell Innovation Center B507, over the years, Chi Inno adhere to the customers provide the best quality service, contact: Huang Shengxing. Welcome to the new and old customers call, letter, visit the guide, business negotiations. Newell Chong expect to be your long-term partner!