OCI Holdings Company Ltd., together with its subsidiaries, provides various chemical products and energy solutions in South Korea, the United States, China, rest of Asia, Europe, and internationally. It offers basic chemicals, such as polysilicon used for solar power generation and semiconductors; phosphoric acid, which is used in semiconductor wafer etchant material, and LCD etchant material; hydrogen peroxide used as an environmentally friendly oxidant; and fumed silica that is used in construction, automobile, semiconductors, etc. The company also offers petrochemical and carbon materials, including carbon black used as reinforcing the rubber elasticity, as well as ink, paint, and electrical conductive materials; benzene, toluene, and xylene used as a base material; pitch used as a binder 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, shoes, furniture, 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, and carbon black, as well as solar generation 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. OCI Holdings Company Ltd. was incorporated in 1959 and is headquartered in Seoul, South Korea.