Petrochemicals
The petrochemicals industry is broadly defined as that industrial activity which uses petroleum or natural gas e petrochemicals industry is broadly defined as that as a source of raw materials and whose products are neither fuels nor fertilizer. The petrochemical industry begins with oil refineries or extracting plants built to remove ethane and higher hydrocarbons from natural gas streams; sometimes methane itself is used as a source material or feedstock. The industry is so varied that analysis by specific compound or class of compound is the most effective method of presentation in the beginning was crude oil. It all begins with crude oil (petroleum) and natural gas.