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. Whether the surface in good condition. No scratches, no indentation, no pinholes, no oil, etc; check the status of the hole should be kept uniform surface was slightly rough, no glitches, no screw installation, no chips left, etc.; chemical analysis of liquid copper sink, circuit board process, to determine the additional amount; the electroless copper process fluid is circulated to maintain the uniformity of the chemical composition of the solution; 5, constantly monitor the temperature inside the solution, keeping the process within the range of variation. Determine and control PTH solution quality and process parameters and make a record; 2, monitoring and treatment of the quality status holes before pre-treatment solution analysis; ensure high-quality copper sink should be advised to use agitation (vibration) plus A process loop filter; 4, strict control of monitoring electroless copper process parameters (including PH, temperature, time, the main component of the solution); backlit test process for checking, the reference light transmittance degree of the image (into 10) to When determining efficiency and Shen Shen copper copper layer quality; through thick after copper, PCB circuit board process, process requirements should be taken for metallurgical testing. 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, Shenzhen circuit board technology, to provide customers with high-precision, high-quality circuit board in Shenzhen, quality assurance, reasonable prices. CNC drilling is drilling in accordance with the provisions of human computer based on data provided. During drilling must be carried out in strict accordance with technical requirements. If the use of film programming, film hole location should be labeled to facilitate verification. Laminated according to the thickness of the substrate (usually 1.6 mm thick substrates) stacked number three; in accordance with the process of documentation requirements, will punch better positioning hole cover, substrate, according to the order placed, and fixed on the machine specified location, then tape the four sides of the fixed grid, so as not to move. Shenzhen circuit board technology, the flexible circuit board technology, Newell Chong (high merchant) by the Department of Shenzhen-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.