In the modern industrial manufacturing ecosystem, electronic hardware reliability directly determines brand reputation, operational uptime, and total product lifecycle costs. Whether engineering high-frequency power controllers, automotive ECU modules, automated robotics gear, or IoT smart grid sensors, original equipment manufacturers (OEMs) face increasing pressure to balance miniaturization with thermal stability and mechanical robustness. At the center of this engineering push sits high-precision circuit board assembly.

Via is one of the most important parts of multilayer PCB board. The drilling cost usually accounts for 30% to 40% of PCB board cost.Simply put, every hole in the PCB can be called a through hole.

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As the name suggests, a multi-layer circuit board can be called a multi-layer circuit board with more than two layers, such as four layers, six layers, eight layers and so on. Of course, some designs are three-layer or five-layer circuits, also called multi-layer PCB circuit boards.