Korea National Oil Corporation engages in the exploration, development, and production of crude oil in Korea and internationally. The company operates in six segments: oil and gas, petroleum distribution, oil stockpiling, financing, drillship chartering, and others. The company purchases and sells crude oil and distributes wholesale gasoline and gas oil. The company also imports and exports crude oil and petroleum products; lends and sells oil stockpiles, manages, operates, and leases stockpile facilities and provides financing services for companies engaged in energy and natural resources development activities.