The Light Olefins ecosystem extends from upstream feedstock extraction through midstream conversion facilities to downstream product manufacturers and end‑user industries. Upstream participants provide naphtha, ethane, propane, and LPG, which are fed into steam crackers and catalytic reformers. Midstream actors include technology licensors, engineering‑procurement‑construction (EPC) firms, and integrated olefins producers that transform feedstocks into ethylene, propylene, and butadiene, while also supplying utilities and waste‑heat recovery systems. Downstream, specialty olefins manufacturers, petrochemical complexes, and distributors add value by polymerizing, blending, or packaging these basic chemicals for sectors such as packaging, automotive, and construction. Value is captured at each stage through process efficiencies, licensing fees, and volume‑based contracts.