Jiangsu craftsmen in the spotlight
Sun Jingnan (right), a senior technician at CRRC Nanjing Puzhen Company, explains the welding process at a workshop on May 24, 2017. Sun, a 46-year-old electrical welder, is a world-renowned welding specialist and China's senior technician for transport equipment, including city metro cars and train carriages. [Photo provided to chinadaily.com.cn] |