Zhitong Finance App News, Harbin Railway Technology (688459.SH) announced that Ren Chongwei, the company's core technician, left office due to physical reasons and will no longer be recognized as a core technician. At the same time, in line with industry technology development and changes, the company's business positioning and the company's business strategy, in order to further improve the R&D management system, strengthen the R&D technical level and innovation capabilities, enhance the overall strength of the R&D team, and ensure technological upgrading and achievement of R&D goals, the company has added the certification of Zheng Yantao, Liu Qinming, and Wang Zhi as the company's core technicians.