Automobile
| Fri 26 Dec 2025
Beijing, Dec. 27 -- Jinxi Alex has been granted a patent for Hopper Car Bottom Door Unit Type Opening and Closing Mechanism. Xue Zhengxuan, Zhi Xiaokun, Zhou Zhiyong, Kang Feng, Ma Yizhong, Chen Xiaohua, Meng Yun, Wei Yezhen, Ren Ning and Ren Yaxiong developed the invention.
The patent application number is CN202422458238U 2024..