This product is specially designed for automobile factory manufacture, whole-painting, large surface repair. Good apply property, outstanding adhesion & flexibility, excellent temperature variation resistance, long handling time. It is used for the filling and leveling up as well as decoration of the deficiencies such as sand holes, shrink holes and cracks on the surface of polyester putty before closing the undercoat in the painting dressing of cars, so as to strengthen the flatness and smoothness of the surface of polyester putty.It can be used in iron panel, steel plate, aluminium plate and on any painted metallic surface.