Since the commissioning of Qinhuangdao Shouqin Metal Materials Co., Ltd. in 2004, Shougang Construction Group has been undertaking a large number of maintenance and repair tasks for Shouqin Company, with an annual output value of tens of millions of yuan. Mainly includes: maintenance and repair of blast furnaces, raw materials, cast iron machines, dry dust removal, differential pressure power generation equipment, and high-voltage electrical equipment in the ironmaking department, as well as maintenance and repair of high-voltage electrical equipment in the sintering area; Maintenance and inspection of the 4300mm wide and thick plate rolling mill in the steel rolling department, including fixed length cutting, cooling bed, roller conveyor, transverse moving machine, heating furnace, quenching furnace, etc; Maintenance and overhaul of mechanical and electrical equipment for sleeve kiln; Qinglong Longhui 2 million ton pellet mine integrates operation, maintenance, and inspection. Due to outstanding maintenance and repair performance, it has been praised by the owners multiple times.