Hankook Shell Oil Co., Ltd. engages in the manufacture, blending, distribution, and marketing of lubricating oils and greases, and other petroleum products and associated products in South Korea. It also provides technical services and other services to its products. The company was formerly known as Keuk Dong Shell Oil Refinery Co., Ltd. The company was founded in 1960 and is headquartered in Busan, South Korea. Hankook Shell Oil Co., Ltd. is a subsidiary of Royal Dutch Shell plc.