A staff member of Taiyuan Iron and Steel (Group), or TISCO, examines stainless steel wire for ballpoint pen tips making in Taiyuan, north China's Shanxi Province, Jan. 10, 2017. 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)