Automobile
| Wed 12 Aug 2026
Beijing, Aug. 12 -- Qingdao CRRC Sifang Rail Vehicle has applied Chinese patent for Device and Method for Splitting Cotter Pin. Nian Shichang, Zhang Bo, Deng Jingrun, Sun Mintang, Sun Shangchen, Zhao Lei, Chen Quanlei, Zhang Jie, Liu Mengmeng, Zhao Fengqiang, Fan Qingyang, Sun Kaixing, Ren Manman and Yang Fangru developed it.
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