US oil firm ExxonMobil Corp. is engaged in the exploration, production, transportation, refining, distribution and marketing of crude oil, gas and petroleum products. ExxonMobil also participates in energy generation and chemicals, plastics and fertilizer production. With operations in more than 40 countries, the company owns around 29,000 service stations. Its products include petrochemicals, natural gas, LPG, gasoline, paraffin, diesel, additives, lubricants, jet fuel, asphalt, adhesives and biofuels. ExxonMobil has regional operations in Argentina, Brazil, Colombia and Mexico. The company holds interests in some 900,000 net acres in Argentina's Vaca Muerta shale play with provincial state-run firm Gas y Petróleo del Neuquén (GyP). The company was formed on November 30, 1999 by the merger of Exxon and Mobil.