Resin stabilizers are additives used to improve the thermal, oxidative and light stability of polymers, protecting them from degradation and extending their service life. These stabilizers can be antioxidants, UV absorbers or a combination of both, depending on the specific needs of the polymer formulation. They are critical in the production of polymers used in outdoor applications, such as building materials, automotive parts and wire and cable coatings, where exposure to sunlight and environmental stresses is unavoidable. Resin stabilizers help maintain the mechanical properties and color stability of polymers, ensuring that their properties remain consistent over time. Common resin stabilizers include hindered phenols, benzotriazoles and hindered amine light stabilizers (HALS).