PCB (Printed Circuit Board), whose name is printed circuit board (PCB) for short, is one of the important components in the electronic industry. Almost every kind of electronic equipment, from electronic watches and calculators to computers, communication electronic equipment and military weapon systems, as long as there are electronic components such as integrated circuits, printed boards are used for the electrical interconnection between them. In the research process of large-scale electronic products, the most basic success factors are the design, documentation and manufacture of the printed board of the product.

After the electronic equipment adopts PCB, due to the consistency of the same kind of PCB, the error of manual wiring is avoided, and the automatic insertion or mounting, automatic soldering and automatic detection of electronic components can be realized, which ensures the quality of electronic equipment, improves labor productivity, reduces cost, and is convenient for maintenance.

Quint tech PCB has developed from single-layer to double-sided, multi-layer and flexible, and still maintains its own development trend. Due to the continuous development in the direction of high precision, high density and high reliability, reducing volume, reducing cost and improving performance, PCB still maintains strong vitality in the development of electronic equipment in the future. The discussion on the development trend of PCB manufacturing technology in the future at home and abroad is basically consistent, that is, to high density, high precision, fine hole diameter, fine wire, fine spacing, high reliability, multi-layer, high-speed transmission, light weight and thin type. in production at the same time to improve productivity, reduce costs, reduce pollution, adapt to the direction of multi-variety and small batch production. The technical development level of printed circuits is generally represented by the linewidth, aperture and thickness / aperture ratio on the printed board.