PVC is a kind of PVC plastic with bright color, corrosion resistance and durability. Because some toxic auxiliary materials such as plasticizer and anti-aging agent are added in the manufacturing process, food and medicine are generally not stored in its products. After adding plasticizer, the plasticity of PVC products can be increased, the brittleness can be reduced, and the service performance is better.

The English full name of PVC-U is unplasticized polyvinyl chloride. PVC-U is also called rigid polyvinyl chloride.

Among them, unplasticized means "unplasticized, without plasticizer"

PVC-U is produced by extrusion molding with polyvinyl chloride as the main raw material and necessary additives.