2. Petron The Philippines’ Leading Oil Company PETRON CORPORATION is the largest oil refining and marketing company in the Philippines. Supplying nearly 40% of the country’s oil requirements, our world-class products and quality services fuel the lives of millions of Filipinos. We are dedicated and passionate about our vision to be the leading provider of total customer solutions in the energy sector and its derivative businesses. Source: About us Page http://www.petron.com/about-leading.asp