PVC is the most variable plastic of the world. It can be used in a wide-sense in products ranging from food protective pots to vehicle parts and more.

PVC is composed of two main materials. 
Chlorine (salt) and Ethylene (crude petroleum)

The ethylene dichloride composition transforms into Vinyl Chloride Monomer VCM) gas at very high temperature levels. VCM is transformed into dust by means of a chemical reaction named as polymerisation which is called as PVC.