着力推动结构调整和优化升级,打破外部原材料采购困局,才是行业由大变强的根本。黑色金属冶炼及压延加工业主要包括炼铁业、炼钢业、钢压延加工业和铁合金冶炼业等,是衡量一国综合国力的重要指标。在中国,黑色金属冶炼及延压加工业的主体是钢铁行业。目前中国是世 Efforts to promote structural adjustment and optimization and upgrading, to break the dilemma of external procurement of raw materials, is the fundamental change from a big industry. Ferrous metal smelting and rolling processing industry, including iron and steel industry, steelmaking, steel rolling industry and ferroalloy smelting industry, is an important measure of a country’s overall national strength. In China, the main body of ferrous metal smelting and pressing processing industry is the steel industry. At present, China is the world