Petrochemicals - What Are the Building Blocks of the Refinery?

Refineries by and large, like I say, that was really the birthplace of the petrochemical industry. Now you can also make a chemical called propylene, a very versatile chemical that is also a building block for plastics and solvents and lots of chemicals. So, I'm going to say that we can actually create that from the refinery or make it at a separate on purpose type of unit in several different ways.