Foosung Co., Ltd. manufactures and sells chemicals in South Korea. It offers refrigerants, such as organic fluorine compounds and polyurethane resins; lithium secondary cells; and inorganic fluorine compounds and other products. The company also provides specialty gases, including semiconductor gases, which are used by semiconductor manufacturing industries; mixture gases for use in welding, laser, medical, marine, and radiometric applications; calibration standard gases used for the calibration of analyzers, as well as for quality control and process control activities; ultra-high purity gases for experimentation and research activities in the semiconductor, petrochemical, and metalworking industries; and other specialty gases. In addition, it is involved in the clean development mechanism operations. The company was founded in 1983 and is headquartered in Hwaseong, South Korea.