PSO is the largest oil marketing company in Pakistan, operating over 3,700 retail outlets across the country. It was established in 1974 and has maintained its market leadership through strategic initiatives like investments in infrastructure and technology. PSO is committed to excellence, innovation, and corporate responsibility. It focuses on developing its workforce and has centralized decision-making structures to control operations across its divisions. PSO aims to provide leadership in the energy market through reliable and cost-effective supply sources.