Hunan Hertz-Ohm Engineering Group Co., Ltd. (referred to as Hunan Heou) is a comprehensive engineering consulting company established in Changsha in cooperation with Heilongjiang Hengdian Lightning Protection Engineering Co., Ltd. Group. The main purpose is to consolidate the original business content of Hengdian Lightning Protection Company to South China, and to increase and promote new engineering consulting and management business scope. The company's service areas involve electric power, mobile communication, wind power, solar energy, chemical petroleum, national defense and civil intelligent buildings, and industrial control fields.