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　　In order to ensure the production quality of HDI circuit boards, manufacturers have gone through a variety of testing metho

　　　　The characteristics of high-density HDI circuit board production equipment are: under the condition that the cost of maki

　　　　Among the PCB operating costs, the cost of raw materials is relatively high, often accounting for about 60%. Among them,

　　　　(1) Rapid start stage (1980-1990): From 1980 to 1990, the PCB industry entered a rapid start stage. During this period, d

　　　　In the design process of PCB multilayer circuit board (HDI board), before routing, we generally stack the multilayer circ

　　　　How to judge the quality of HDI circuit boards? Shenzhen HDI circuit board manufacturers (Shenzhen Zhongke Circuit) have