OCI Company Ltd., together with its subsidiaries, manufactures and sells basic chemical products in Korea, the United States, China, Asia, Europe, and internationally. The company operates through four segments: Basic Chemicals, Carbon Chemicals, Energy Solutions, and Others. It provides basic chemicals, such as polysilicon used for solar power generation and semiconductors; phosphoric acid, which is used in semiconductor wafer etchant material, LCD etchant material, food additives, and metal surface treatment agents; hydrogen peroxide used as an environmentally friendly oxidant in healthcare, food, and cosmetic industries; fumed silica that is used in construction, automobile, semiconductors, etc.; and vacuum insulation panels. The company also offers petrochemical and carbon materials, including carbon black used as reinforcing rubber elasticity and color rubber, as well as ink, paint, and conductive materials; benzene, toluene, and xylene used as a base material; pitch used as a binding agent in anodes for aluminum smelting, and other binding applications; plasticizers that enhance flexibility, low-temperature resistance, and processability of PVC products; and TDI used in foam type products, such as the components of vehicles, beds, paints, and adhesives. In addition, it provides develops and operates solar PV energy and cogeneration power plants. Further, the company manufactures and sells percarbonate, solar tracker and panels, pesticides, coal tar, carbon black, as well as solar energy equipment and related materials. Additionally, it develops real estate; invests in and operates information system; supplies steam and hot water; and offers manpower and jobs for business support services. The company was formerly known as DC Chemical Co., Ltd. and changed its name to OCI Company Ltd. in April 2009. OCI Company Ltd. was founded in 1959 and is headquartered in Seoul, South Korea.