Foosung Co., Ltd., together with its subsidiaries, engages in the manufacture and sale of chemical products for automotive, iron and steel, semiconductor, construction, and environmental industries in South Korea. The company offers specialty gases, such as hexafluorobutadiene, tungsten hexafluoride, difluoromethane, and trifluoromethane; secondary battery materials, including lithium hexafluorophosphate, phosphorodifluoridic acid, lithium salt, and lithium tetrafluoroborate; and inorganic fluorine compounds comprising anhydrous hydrogen fluoride, hydrogen fluoride, hexafluorosilicic acid, ammonium bifluoride, hydrochloric acid, and calcium sulfate. It also provides refrigerants, foaming gases and additives, and fire extinguishing agents. The company was founded in 1983 and is headquartered in Hwaseong-si, South Korea.