Some points your HDI PCB manufacturer don't want you know

This paper is focus on Some points your HDI PCB manufacturer don't want you know.
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HDI PCBs are printed circuit boards with a much higher wiring and pad connection density than a traditional PCB.
HDI PCBs are characterized by finer lines, closer spaces, smaller capture pads, and micro-sized vias.
HDI PCB manufacturing is a growing area since the market demand for lightweight and thinner PCBs that can handle high-speed signals with reduced signal loss has steadily increased as consumer electronic end-products are produced in smaller form factors.

As a result of the market demand for HDI PCB manufacturing, there were many industries, including:

Automotive (Engine Control Units, GPS, Dashboard Electronics)
Computers (Laptops, Tablets, Wearable Electronics, Internet of Things - IoT)
Communication (Mobile phones, Modules, Routers, Switches)
Digitial (Cameras, Audio, Video)