China's TISCO boasts research, development of high-tech stainless steel products

Workers of Taiyuan Iron and Steel (Group), or TISCO, operate steel rolling equipment in Taiyuan, north China's Shanxi Province, May 24, 2019. As a leading stainless steel maker, TISCO boasted research and development of high-tech stainless steel products by large efforts on innovation. So far TISCO possesses over 2,700 authorized patents, including 772 patents for invention. (Xinhua/Cao Yang)