PVC stabilizers are chemical additives used in the production of polyvinyl chloride (PVC) to enhance its stability and prevent degradation caused by heat, light, and other external factors. They help maintain the desired physical properties of PVC products and extend their lifespan by inhibiting discoloration, brittleness, and loss of mechanical strength. PVC stabilizers play a crucial role in ensuring the durability and reliability of PVC materials in various applications, such as construction, automotive, electrical, and consumer goods industries.