Transportation
| Fri 24 Jul 2026
Beijing, July 24 -- State Intellectual Property Office of China has received CRRC Guangdong patent application for Auxiliary Device for Airtight Test of Bogie Frame. Tan Xiongwei, Yuan Rongcan, Su Jianwei, Huang Jianjian, Li Zhuohui, Wang Rongfeng, Yang Jincai, Ou Rongan, Dou Dongjue, Wu Zongwei, Li Xijing and Cai Langsheng deve..