PCB (Printed Circuit Board) is the core carrier of electronic components. Through printing technology, conductive lines are laminated on an insulating substrate to achieve electrical connections between electronic components. Widely used in fields such as communication, consumer electronics, automotive electronics, medical equipment, etc. Its production process includes design, plate making, etching, drilling, welding and other links, with high precision and batch characteristics. The advantages of PCB lie in high integration, strong reliability, small size, and low cost, which can significantly improve circuit performance and production efficiency. It is a key basic component for the miniaturization and intelligence of modern electronic devices.

PCBA (Printed Circuit Board Assembly) is a complete functional module formed by soldering electronic components (such as chips, resistors, capacitors, etc.) on the basis of PCB, and is the core component of electronic devices. Widely used in fields such as consumer electronics, automotive electronics, industrial control, medical equipment, etc. The production process includes SMT surface mounting, reflow soldering, wave soldering, testing and other stages, with high automation and precision characteristics. The advantages of PCBA lie in its high integration, stable performance, and efficient production, which can significantly shorten the product development cycle and reduce assembly costs. It is a key link in achieving miniaturization and intelligence of electronic products.