CAELUM Co., Ltd. engages in the operation of geothermal power generation facilities and aircraft modification and sales. It operates through the following business divisions: Geothermal power generation facility, Aircraft modification sales, Smart connectivity, Aviation parts, and Electric vehicle charging. The Geothermal power generation facility produces hydrothermal generators, condensers, and piping. The Aircraft modification sales division deals with modification and aircraft supply. The Smart connectivity division offers character phones. The Aviation parts division manufactures aircraft parts. The Electric vehicle charging division installs charging systems and provides charging services. The company was founded on May 19, 2009 and is headquartered in Busan, South Korea.