Multi-layer PCBs are advanced electronic components that consist of multiple layers of conductive pathways and insulating materials. These layers are bonded together to create a compact and efficient circuit design, allowing for increased functionality in a limited space. Multi-layer PCBs are essential in modern electronics, as they enable complex circuit designs that support high-density interconnections. One of the key advantages of multi-layer PCBs is their ability to reduce electromagnetic interference (EMI) and improve signal integrity. Additionally, multi-layer PCBs facilitate better thermal management, which is crucial for high-power applications. These boards are widely used in various industries, including telecommunications, aerospace, automotive, and medical devices. Their versatility and reliability make them a preferred choice for applications requiring high performance and durability.