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　　　　HDI board (English is high-density interconnectboard) is a circuit board with high wiring density in micro blind via tech

　　High-density HDI circuit boards are mainly concentrated in 4-layer or 6-layer boards, which are interconnected according to

　　　　First, the process factors of the soft and hard board factory:　　1. The circuit design of the flexible and rigid board is

　　　　The impedance of the PCB multilayer circuit board refers to the parameters of resistance and reactance, which hinder the

　　　　Speaking of blind and buried via boards, everyone's understanding and understanding of blind and buried via boards ar

　　　　1. Advantages of Rigid and Rigid Boards　　There are many advantages to using Rigid-flexBoard, which are listed as follows: