Transportation
| Wed 24 Jul 2024
Beijing, July 25 -- Offshore Oil Eng Qingdao and Offshore Oil Eng have received a patent for frame type limiting device suitable for crawler crane. This invention was developed by Zhang Yongwei, Yang Quan, Liu Sen, Zhang Hui, Feng Changsong, Li Xinfeng, Li Renfei, Liu Chao, Huang Yinglu, Fu Xiaojun, Qi Haizheng, Guo Shixiang, Wa..