is a fluorocarbon primer for exterior walls, formulated with high-quality fluorocarbon resin, pigments and fillers, various additives, and environmentally friendly solvents. For AB two-component coating. Excellent alkali resistance, preventing the precipitation of free alkaline substances on the wall and damaging the surface coating; Strong penetration and adhesion can enhance the adhesion and dosage of topcoat, thereby reducing construction costs; Good waterproof performance, as the primer is composed of glass transition temperature resin, it has high hardness after film formation, preventing water from penetrating through the wall.