The document discusses PSO (Pakistan State Oil Company), the largest oil marketing company in Pakistan. It provides a brief history of PSO, describing its establishment, growth in market share during the 1980s-1990s, and subsequent decline due to deregulation efforts. It then summarizes PSO's vision, commitment to leadership in energy markets, and focus on low-cost operations and access to long-term supply sources. Key competitors and PSO's current market share are also mentioned.