Korea Petroleum Information Network
Covers petrochemical and energy industry, also publishes statistics.
SK Corporation
Oil refining and marketing firm; also makes aviation fuel and lubricants.
SK Global Energy Sales Group
Sells petroleum products including gasoline, diesel, kerosene LPG, and various by-products such as lubricants and asphalt, as well as fuel and service vessels at sea.
US Energy Information Administration Country Analy
Report on energy sector, including information on oil, gas, coal, and electricity.