To elaborate further: "Chemical plants produce olefins by steam cracking of natural gas liquids like ethane and propane. Olefins are the basis for polymers and

To elaborate further: "Chemical plants produce olefins by steam cracking of natural gas liquids like ethane and propane. Olefins are the basis for polymers and oligomers used in plastics, resins, fibers, elastomers, lubricants, and gels."