底漆的作用是使涂膜与基面粘结牢固，抗碱防水，并有利于与金属漆的附着。底

The function of the primer is to make the coating film adhere firmly to the base surface, resist alkali and waterproof, and facilitate the adhesion with the metallic paint. The color of the primer is finally adjusted to be similar to the color of the metallic paint. When the primer roller is applied, two passes are generally alive. Roll coating should be even, and it is strictly prohibited to miss coating. After roller coating for 2 hours, after the coating film is dry, lightly sand one layer with fine sandpaper, and then roll the next layer of paint.

The role of the primer is to make the coating film and the substrate bonded firmly, resistant to alkali and waterproof, and conducive to attachment with metal paint. The color of the primer is finally adjusted to be similar to the color of the metallic paint. Primer rollers are generally applied in two lifes. To roll evenly, do not allow leakage. After 2 hours of roller coating, dry the film and gently polish it with fine sandpaper, then roll down a coat.

The role of primer is to make the film and base surface bond firmly, alkali resistant and waterproof, and conducive to the attachment of metallic paint. The color of the primer is finally formulated to be similar to that of metallic paint. When the primer roller is applied, it is generally two times. Roll coating should be uniform, and missing coating is strictly prohibited. After 2 hours of roller coating, after the film is dry, polish it gently with fine sandpaper, and then apply the next layer of paint.