1. The telephone is required to be easy to use after the components are installed on the Automobile Board PCB, that is, the electrical connection must meet the requirements;
2. The line width, line thickness, and line distance of the line meet the requirements to prevent the line from heating, breaking, and short-circuiting;
3. The copper skin is not easy to fall off under high temperature;
4. The copper surface is not easy to oxidize, which affects the installation speed, and it will be broken soon after being oxidized;
5. There is no additional electromagnetic radiation;
6. The shape is not deformed, so as to avoid deformation of the housing and dislocation of the screw holes after installation. Now they are all mechanized installations, the hole position of the circuit board and the deformation error of the circuit and the design should be within the allowable range;
7. High temperature, high humidity and special environment resistance should also be considered;
8. The mechanical properties of the Automobile Board PCB surface must meet the installation requirements.
