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 circuit board technology tutorials, reasonable prices. Also called slope circuit board technology for the PCB temperature from ambient temperature to be raised to the activation temperature. In this area, the heat capacity of the circuit boards and components are different, they actually raise the temperature of the different rates. Temperature circuit boards and components should not exceed 2 ~ 5 ℃ per second speed continuous rise, if excessive, cause thermal shock, circuit boards and components can be damaged pcb circuit board technology, such as tiny cracks ceramic capacitors. The temperature rise is too slow, the paste will be excessive temperature, solvent evaporation is insufficient, affecting the quality of welding. Oven preheat zone usually accounts for the entire length of the heating zone of 15 to 25% 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 circuit board, printed circuit board technology quality assurance, reasonable prices. Original design by means circuit-aided design (CAD) system to format a floppy disk available to manufacturers and follow the provided circuit design data and graphics into the required manufacturing printed circuit board products. To achieve the required design specifications, must follow the 'printed circuit board design specification' of the original image size and pore size variety of graphics technology review pcb circuit board technology | Newell Year | Shenzhen circuit board technology from Shenzhen Chi Department of Electronic Technology Limited. Newell Shenzhen Electronic Technology Co., Ltd. (www.yipcb.com) (www.yipcb.com) located in Bao'an District of Shenzhen City forward Road Newell Innovation Center B507. Scraps and development in the wave of market economy, the current record Newell has a high profile in the printed wiring board, enjoy a good reputation. Newell Chong made the whole network business alliance certification, marking our service and management level has reached a new height. Newell hit the staff willing to work with all people of insight and common development, for a better future.