What is PVC material

What is PVC material, I believe that many people are just like me, is not clear, in fact, is PVC material PVC, it is widely used in life can be seen everywhere.
PVC material is one of the largest production of plastic products, cheap, widely used PVC resin is white or pale yellow powder.
According to different uses can include different additives, PVC can be present in different physical and mechanical properties. Adding the right amount of plasticizer in polyvinyl chloride resin, can be made from many kinds of hard, soft and transparent products.
PVC can be divided into hard and soft PVC PVC. Hard PVC accounts for about 2/3 market, soft PVC 1/3.
Soft PVC typically used in floors, ceilings and leather surface. Of hard PVC is widely used in the chemical industry make tank linings, building of corrugated board, door structure, wall decorations, such as building materials.