Seok-Hwan Yoon

Part of OCI Holdings Co. Ltd., DCRE Co., Ltd. is a South Korean company that manufactures basic inorganic chemicals. The company is based in Seoul, South Korea.

Part of Umicore SA, Umicore Catalysis Korea Co. Ltd. is a South Korean company that manufactures automotive exhaust catalyst. The company is based in Jung-gu, South Korea. Umicore Catalysis Korea Co. was acquired by Umicore SA on March 14, 2017 for $87.49 million.

OCI Specialty CO., Ltd. manufactures silicon wafer. Its products include slim rod, wafer, ingot and MG-Si. The company was founded on July 1, 2009 and is headquartered in Chungnam-do, South Korea.

Part of SNF SA, OCI-SNF Co Ltd is a South Korean company that manufactures and markets water treatment and paper making chemicals. The company is based in Seoul, South Korea. OCI-SNF Co was acquired by SNF SA on October 15, 2014 for $89.86 million.

SK Materials Co., Ltd. engages in developing and manufacturing of industrial gases. Its products include special gas, industrial gas, and precursor. The company was founded on November 10, 1982 and is headquartered in Yeongju-si, South Korea.

OCI Solar Power LLC owns and operates solar photovoltaic power plants. It specializes in utility, commercial, and industrial scale solar projects. The company was founded in 2011 and is headquartered in San Antonio, TX.