PVC is actually a vinyl polymerized material, which is a noncrystalline material. PVC materials are often added stabilizers, lubricants, auxiliary processing agents, pigments, impact resistant agents and other additives. It has no flammability, high strength, weather resistance and excellent geometric stability. PVC has strong resistance to oxidants, reducing agents and strong acids. However, it can be corroded by concentrated oxidizing acid such as concentrated sulfuric acid and concentrated nitric acid, and it is not suitable for the contact with aromatic hydrocarbon and chlorinated hydrocarbon. In addition, the term person vs computer is abbreviated as PVC, and PVC human form is often referred to as PVC. The bag made of PVC is called the PVC bag.