Starting with its routine maintenance service for Taean thermal power plant in 1995, Geumhwa PSC has been providing maintenance service for 23 units of 6 thermal power plants: Dangjin thermal power plant, Youngheung thermal power plant, Seoincheon combined cycle power plant, Youngdong thermal power plant and Samcheok thermal power plant. We have satisfied customers and provided high-quality O&M service through a variety of maintenance activities, such as regular and irregular circulatory check-out, the maintenance service for preventing accidental stops, planned outage maintenance, commissioning maintenance and other simplified maintenance work services and expansion of business areas to Yeongheung thermal power plant Units 1 ~ 4 desulfurization and the operation of ash treatment equipments from 2015.