Automobile
| Mon 17 Aug 2026
Beijing, Aug. 17 -- Zhengzhou Nissan Automobile has obtained a patent for safety protection type upright climbing ladder. This invention was developed by Zhao Ke, Shi Menglei, Gao Peng, Wang Ran, Zhao Zijian, Li Wenyu, Chen Fulong, Xing Quansheng, Zhang Pu, Li Hui, Wang Liming, Zhai Yuzhao, Jiang Zhanguo and Wang Jianzhou.
Th..