Nowadays, the intelligence, thinness, and miniaturization of electronic devices have become mainstream, and consumers have increasingly high requirements for product quality. So manufacturers need to become increasingly strict in their quality control of internal PCB circuit boards in order to win the recognition of consumers and customers. 

How to achieve quality control of PCB requires the use of a product quality traceability system. Generally, laser marking technology is used to laser engrave strings, one-dimensional codes, two-dimensional codes and other information on PCB boards, which are recognized by cameras and uploaded to a database to automatically remove non-conforming products, achieving product quality traceability throughout the entire internal process. From source supplier information to product outbound data tracking, the entire process is tracked to maximize product quality and effectively achieve automated production control of products. 

In the early days, strings, images, contact information, QR codes, and other information on the surface of PCBs were printed using inkjet printing. With the development of lightweight and miniaturized electronic devices, the size of PCB boards is very small. In order to save space utilization, the QR codes marked on PCB boards are usually very small. The marking of high-density and small size QR codes can only be achieved through laser marking technology. 

Compared with inkjet printing, laser marking technology is more environmentally friendly and economical. Permanent marks will not be easily erased, and non-contact non-destructive marking will not damage the substrate. It has high processing accuracy, long service life, fast processing efficiency, exquisite marks, and no obvious touch sensation when touched by hand. It is easy to operate manually and has a foolproof processing style. 

The combination of the new generation of PCB QR code marking and laser technology, laser marking technology helps the PCB board industry achieve perfect quality control, and the vast PCB board market provides broad development space for the laser marking machine industry.