Pakistan State Oil (PSO) is one of the important strategic assets of the Pakistani economy. As the country's largest Company in terms of turnover, PSO leads the oil marketing sector, both in Black oil and White oil. It serves around 3 million customers every day across the entire economic value chain with over 3500 retail outlets and controls 74% of the country's oil storage capacity. It is involved in import, storage, distribution and marketing of a range petroleum products including gasoline , diesel, fuel oil, jet fuel, LPG, CNG and petrochemicals.