Light stabilizer 783 is the latest generation of polymeric high molecular weight hindered amine light stabilizer with good processing thermal stability, good compatibility and water extraction resistance. The mechanism of decomposition of hydroperoxides, quenching of excited state energy and other mechanisms to exert the low concentration and high efficiency anti-photothermal degradation. The mechanism of different hindered amine light stabilizers in this system, The function of the active group has been strengthened and the synergism has been fully developed. This product is an excellent universal light stabilizer, whether used in thick or thin products. Superior price performance ratio.