The chemical industry value chain begins with the extraction of raw materials like oil, gas, and minerals, which are refined into petrochemicals (e.g., ethylene, propylene) forming the basis for numerous products. These are further processed into primary chemicals (e.g., ammonia, intermediates) used in various industries. The next phase involves polymers, widely used in plastics, aerospace, and automotive applications. Finally, specialty chemicals, including additives, coatings, and pharmaceuticals, are produced for specific applications. The value chain concludes with the marketing, distribution, and sales of these chemicals to industries like agriculture, automotive, and healthcare for consumer product manufacturing.