Three anti-paint is a specially formulated coating to protect the circuit board from the environment. Thereby extending the service life of electronic products, increasing the safety factor and ensuring the safety and reliability of product use. The increasingly widespread use of electronic products in daily life, combined with the use of three anti-paint common film allows manufacturers to effectively improve product quality, reduce the cost of expensive warranty period, the use of three anti-paint is also from the original high-tech field The printed circuit boards are slowly coming to the civilian and commercial sectors.