For electronic equipment, certain heat will be generated during operation, which will cause the temperature inside the equipment to rise rapidly. If the heat is not released in time, the equipment will continue to rise temperature, and the device will fail due to overheating, and the reliability of electronic equipment will be reduced

The circuit board is mainly composed of pads, vias, mounting holes, wires, components, connectors, SMT patches, filling, electrical boundaries, etc. the main functions of each component are as follows:

PCB production process is more complex, it involves a wide range of processes, from simple machining to complex machining, there are common chemical reactions, photochemical electrochemical thermochemistry and other processes, computer-aided design of cam and other aspects of knowledge.