Exxon Mobil Corporation (Exxon Mobil) is engaged in exploration and production of crude oil and natural gas, manufacture of petroleum products, and transportation and sale of crude oil, natural gas, and petroleum products with a global presence. The company operates in more than 200 countries under the names Exxon Mobil, Exxon, Esso, and Mobil. Exxon Mobil had a strong asset base of $242 billion in 2007, an increase of 10.5% over 2006. However, slowdown in the US economy and the European Union would depress revenue growth and reduce margins of Exxon Mobil.