Oil is a hydrocarbon mixture made up of the remains of plants and animals that lasted a long time. Based on the properties of the crude oil, it may contain a small number of hydrocarbons that exist in the vapor form in natural underground reservoirs, a small number of non-hydrocarbons such as sulfur, various metals; liquid gases, organic solvents derived from oil sands, Gilsonite, shale oil, and so on. Visit for more information about
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