OCI Company Ltd. manufactures and sells polysilicon, carbon black, and related products. Its offerings include semiconductor materials such as polysilicon, phosphoric acid, hydrogen peroxide, semiconductor precursors, and fumed silica; Li-ion battery materials including caustic soda and high-softening-point paint pitch; and carbon materials comprising carbon black, pitch, BTX, and plasticizers. The company also provides TDI products. Incorporated in 1959, OCI Company Ltd. is headquartered in Seoul, South Korea.