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太钢党委书记宋书信(右)与公司经理李成共商公司发展大计。十1991年建成投产的太钢4号高炉是目前山西最大的、具有一定现代化生产工艺和技术水平的1350立方米高炉。全国最大的特殊钢企业
Tai Shugang’s party secretary Song Shuxin (right) and the company’s manager Li Cheng discuss the company’s development plan. The TI 4 blast furnace completed and put into operation in 1991 is currently the largest 1350 cubic meter blast furnace in Shanxi with a certain degree of modern production technology and technology. The largest special steel company in the country