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, flexible circuit board technology, reasonable prices. Pattern plating resist metals - the main purpose of the tin-lead alloy plating copper coating protected the substrate as etching. However, the coating thickness must be strictly controlled to ensure that the etching process can effectively protect the base metal. Check Item hole metallization coating the inner wall is complete, with or without holes, lack of copper and other defects; check if the surface of the exposed copper surface is uniformly thick copper layers, with or without nodules, with or without sand-like and so on; check bath The chemical composition is within the range prescribed in the process; check the plating area calculated values, coupled with solid production experience based on the value obtained or% compared to finalize the current value; process documents on inspection procedures provided, in accordance with the process requirements to determine the plating process parameters. The surface state of the connection reliability and conducting site inspections groove conductive parts, should be in good condition; before plating process analysis and adjustment of the solution that is analyzed single reference; determining racking parts and fixture preparation. 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 professional supplier of plywood, boards craft tutorials, to provide customers with high-precision, high-quality circuit board in Shenzhen, quality assurance, reasonable prices. To carry out the first pieces of etching test, the phone circuit board technology, the conditions to determine and then etching process must be neutralized after etching; making plywood production process, pay attention to check the inner pattern or AOI inspection, Guangdong board technology, after passing into the next process; during lamination process conditions should be stated; there are gold-plated plugs requirements should be specified coating thickness and plating parts, such as hot air the entire level, to indicate the process parameters and Coating stripping matters should be noted; Guangdong circuit board technology, the mobile phone circuit board technology, 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.