UnileverUnilever est une multinationale néerlando-britannique, dont le siège social est situé à Rotterdam et à Londres. Le groupe est présent dans l'alimentation et l’hygiène. Il contrôle de nombreuses marques connues (Savons Dove, Lessive Omo, Thé Lipton, Sauces Knorr, Mayonnaises Amora, Glaces Magnum, Glaces Ben and Jerry's, Déodorants Axe, etc...) Unilever est en 2010, par son volume de ventes, le quatrième acteur mondial, derrière Nestlé, PepsiCo et Coca-Cola Company, du marché de l'agroalimentaire.
Heavy crude oilHeavy crude oil (or extra heavy crude oil) is highly viscous oil that cannot easily flow from production wells under normal reservoir conditions. It is referred to as "heavy" because its density or specific gravity is higher than that of light crude oil. Heavy crude oil has been defined as any liquid petroleum with an API gravity less than 20°. Physical properties that differ between heavy crude oils and lighter grades include higher viscosity and specific gravity, as well as higher molecular weight hydrocarbon composition.
