Plasticizers are substances added to polyvinyl chloride (PVC) to increase its flexibility, workability and durability. PVC is a rigid, brittle plastic in its natural form, but when combined with plasticizers, it becomes more pliable and easier to process. This makes it suitable for a wide range of applications, such as in flooring, wiring, films and soft PVC products like clothing, plumbing pipes and medical equipment.

Stabilizers in plastics, especially in PVC, are additives used to prevent degradation during processing and to improve the long-term durability of the material. They protect the polymer from heat, UV light, and oxidative damage, which can cause discoloration, brittleness, or loss of mechanical properties.

Lubricants are lubricating medium used to reduce the frictional resistance of friction pairs and slow down wear. In industrial applications, lubricants are mainly used to improve the fluidity and demoulding of plastics during molding, thereby improving the performance of the product.

Vulcanizing agents are substances used in the vulcanization process, which is a chemical reaction that cross-links polymer chains in materials like rubber to improve their strength, elasticity, and durability. 

Blowing agents are substances that are used to create a foam structure in materials like plastics, rubbers, and elastomers during the manufacturing process. When activated by heat or a chemical reaction, blowing agents release gases that cause the material to expand and form a foam, which gives the material a lightweight, cellular structure. The foam produced by blowing agents can improve insulation, reduce material weight, and enhance the material's mechanical properties, depending on the application.

Impact modifiers are additives used in polymers, particularly plastics, to improve their impact resistance, making them less prone to breaking, cracking, or shattering when subjected to external forces. These modifiers work by altering the physical properties of the polymer, typically by enhancing its ductility (ability to deform under stress) and toughness (resistance to fracture). 

Antioxidants and UV absorbers are additives used in plastics, rubbers, and other materials to protect them from degradation caused by exposure to oxygen and ultraviolet (UV) light, respectively. Both play crucial roles in enhancing the longevity, durability, and performance of materials, particularly in applications where the material is exposed to outdoor conditions or other harsh environments.

In the industrial production processes of mechanical manufacturing, electronic information, automobiles, aviation, aerospace, ships, rail transportation, electrical equipment, instrumentation, chemical engineering, medicine, textiles, clothing, food processing, and other industries, there are many other additives that play an important role in improving processing performance, improving the physical and chemical properties of materials, extending service life, and improving product quality.