Printed Circuit Boards (PCBs) are essential for powering and connecting components in electronic systems used across various industries. Common types include single-layer, double-layer, multi-layer, rigid, flexible, rigid-flex, and aluminum-backed PCBs. Each type suits specific applications, such as LED lighting, industrial machines, medical equipment, and communication systems. Choosing the right PCB helps improve performance, durability, and space efficiency. Advanced types like HDI and high-frequency PCBs are ideal for high-speed and compact devices. With the right PCB, manufacturers can reduce costs, ensure reliability, and support innovation in industrial automation and electronic product design.