Transportation
| Thu 12 Feb 2026
Beijing, Feb. 12 -- Yongchen Chengyu Shandong New Building Material Tech Co Ltd has submitted a patent application for Road Surface Crushing Device for Road Crack Maintenance. Zhou Xiang, Ma Zhongjian, Wang Zhenfei, Zhang Niannian, Liu Shanshan, Cao Kai, Xue Xue, Li Rongji, Xie Yanqi, Liu Jian, Dong Beibei, Mao Chengshun, Yang G..