Three anti-paints are used to protect circuit boards and related equipment from environmental erosion, thereby prolonging the service life of the product and improving the reliability of the product. Three-proofing means: moisture-proof, salt-fog-proof and static-proof. It is a thin protective coating for electronic circuits and components, which can enhance the moisture resistance and pollution resistance of electronic circuits and components, prevent solder joints and conductors from being corroded, shield and eliminate electromagnetic interference, prevent short circuits, and improve circuits The insulation properties of the board.

Coating three-proof paint on PCBA and components on the board, it can protect printed circuit boards (pcb) and other electronic products from corrosion. If the PCB is used for a long period of time, problems such as corrosion, softening, deformation, and mold may occur, which may cause circuit failure of the circuit board. The three-proof paint is coated on the surface of the circuit board to form a three-proof protective film. Sensitive circuits in electronic equipment devices that work under harsh environmental conditions are protected, so that they have a longer life and better performance. Such as outdoor automotive pcba, gps pcba, 4g model pcba, etc. The circuit board is susceptible to moisture, salt spray and mold, which can cause system failures. Therefore, the three-proof protective coating technology for circuit substrates represented by PCBA has become a process technology that has attracted much attention in the field of electronic assembly.