Established in 1953, Petrobras is a publicly traded company with a presence in 26 countries. The company's business interests focus on integrated and specialized energy exploration and production, refining, marketing, transportation, petrochemicals, oil distribution, natural gas, electric power and biofuels. With a fully developed operational infrastructure, the company currently operates most of Brazil's oil and gas fields, and has a large base of proven reserves. In 45 years of developing Brazil's offshore basins, Petrobras has developed special expertise in deepwater exploration and production, with 139 production platforms and 15 refineries with a processing capacity of 2.2 million barrels per day. As the largest deepwater operator worldwide, the company's oil and gas discoveries in the pre-salt layer opened a new frontier in the sector, with the potential to put Brazil among the countries with the highest oil and gas reserves.