Pipe
| Tue 13 Oct 2026
Beijing, Oct. 13 -- State Intellectual Property Office of China has awarded a patent to China Second Metallurgy Group for Municipal Pipeline Dredging Device. Yan Desheng, Fan Qin, Zhao Chenze, Xiang Bo, Liu Yujie, Dong Cheng'ao, Tian Xiaomeng, Sun Wenhao, Zhou Yanping, Zhang Yue, Yan Rongchang and Liu Wenjing developed the inven..