M23# Unsaturated Polyester Resin Ingredients: Unsaturated acid, Saturated acid, Diol , Polyalcohol, Modified Resin, Special Additive, and Assistant pyrosynthesis. Characteristics: Polyester Putty that it is made of this resins have good scratching performance, excellent resistance to temperature changing,outstanding adhesive force. Pliability can reach less than 50cm , with high-temperature resistance of over 150℃. Mainly being applied to the leveling up and decoration of the blemishes, such as the drop pits of keelsons, pin-shaped cavities, crackles, and little welding lines etc. before closing the floating coat in the painting technics of passenger car to satisfy the leveling and smoothness of the keelsons before painting the surface. It is also of good toolability for glass reinforced plastics.