Imported light stabilizer HX-2020T is a high molecular weight block oligomeric hindered amine light stabilizer (HALS) that exhibits excellent compatibility and high extraction resistance in polymers. A unique feature of HX-2020T light stabilizer is its very narrow molecular weight distribution, which ensures consistent performance during use and processing. Light stabilizer HX-2020T combines the typical advantages of multiple high molecular weight light stabilizers. It provides polymers with excellent light and heat stability, as well as improved auxiliary properties such as improved polymer processing and enhanced pigment color.